diff --git a/python/obitools3/dms/column/column_idx.pyx b/python/obitools3/dms/column/column_idx.pyx
index 76a68ac..da1bb06 100755
--- a/python/obitools3/dms/column/column_idx.pyx
+++ b/python/obitools3/dms/column/column_idx.pyx
@@ -30,7 +30,7 @@ cdef class Column_idx(Column):
         cdef   index_t value
         cdef   object  result 
         value = obi_get_index_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIIdx_NA :
             result = None
         else :
@@ -42,7 +42,7 @@ cdef class Column_idx(Column):
         if value is None :
             value = OBIIdx_NA
         if obi_set_index_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, <index_t> value) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_idx(Column_multi_elts):
@@ -57,7 +57,7 @@ cdef class Column_multi_elts_idx(Column_multi_elts):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_index_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIIdx_NA :
             result = None
         else :
@@ -81,7 +81,7 @@ cdef class Column_multi_elts_idx(Column_multi_elts):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_index_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIIdx_NA :
                 value_in_result = PyLong_FromLongLong(value)
                 result[elements_names[i]] = value_in_result
@@ -98,11 +98,11 @@ cdef class Column_multi_elts_idx(Column_multi_elts):
             value = OBIIdx_NA
         if type(elt_id) == int :
             if obi_set_index_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, <index_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_index_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, <index_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
     cpdef set_line_idx(self, index_t line_nb, object values):
         if values is None :
diff --git a/python/obitools3/dms/column/typed_column/bool.pyx b/python/obitools3/dms/column/typed_column/bool.pyx
index 2b1e541..54377fd 100755
--- a/python/obitools3/dms/column/typed_column/bool.pyx
+++ b/python/obitools3/dms/column/typed_column/bool.pyx
@@ -51,7 +51,7 @@ cdef class Column_bool(Column):
         cdef   obibool_t value
         cdef   object    result
         value = obi_get_bool_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIBool_NA :
             result = None
         else :
@@ -63,7 +63,7 @@ cdef class Column_bool(Column):
         if value is None :
             value = OBIBool_NA
         if obi_set_bool_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, <obibool_t> value) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_bool(Column_multi_elts):
@@ -78,7 +78,7 @@ cdef class Column_multi_elts_bool(Column_multi_elts):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_bool_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIBool_NA :
             result = None
         else :
@@ -102,7 +102,7 @@ cdef class Column_multi_elts_bool(Column_multi_elts):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_bool_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIBool_NA :
                 value_in_result = PyBool_FromLong(value)   
                 result[elements_names[i]] = value_in_result
@@ -119,11 +119,11 @@ cdef class Column_multi_elts_bool(Column_multi_elts):
             value = OBIBool_NA
         if type(elt_id) == int :
             if obi_set_bool_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, <obibool_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_bool_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, <obibool_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_bool(Column):
@@ -140,7 +140,7 @@ cdef class Column_tuples_bool(Column):
         result = []
         
         array = <obibool_t*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
 
         if array == OBITuple_NA :
             return None
@@ -179,7 +179,7 @@ cdef class Column_tuples_bool(Column):
                     j+=1
 
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <obibool_t*> array, sizeof(obibool_t)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
 
         if array != <obibool_t*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/dms/column/typed_column/char.pyx b/python/obitools3/dms/column/typed_column/char.pyx
index 6c95024..1ba7e89 100755
--- a/python/obitools3/dms/column/typed_column/char.pyx
+++ b/python/obitools3/dms/column/typed_column/char.pyx
@@ -50,7 +50,7 @@ cdef class Column_char(Column):
         cdef   obichar_t value
         cdef   object    result
         value = obi_get_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIChar_NA :
             result = None
         else :
@@ -65,7 +65,7 @@ cdef class Column_char(Column):
         else :
             value_b = <obichar_t> tobytes(value)[0]
         if obi_set_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, value_b) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_char(Column_multi_elts):
@@ -80,7 +80,7 @@ cdef class Column_multi_elts_char(Column_multi_elts):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_char_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIChar_NA :
             result = None
         else :
@@ -104,7 +104,7 @@ cdef class Column_multi_elts_char(Column_multi_elts):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_char_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIChar_NA :
                 value_in_result = <bytes>value
                 result[elements_names[i]] = value_in_result
@@ -124,11 +124,11 @@ cdef class Column_multi_elts_char(Column_multi_elts):
             value_b = <obichar_t> tobytes(value)[0]
         if type(elt_id) == int :
             if obi_set_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, value_b) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_char_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, value_b) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_char(Column):
@@ -145,7 +145,7 @@ cdef class Column_tuples_char(Column):
         result = []
         
         array = <obichar_t*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
 
         if array == OBITuple_NA :
             return None
@@ -186,7 +186,7 @@ cdef class Column_tuples_char(Column):
                     j+=1
 
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <obichar_t*> array, sizeof(obichar_t)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
 
         if array != <obichar_t*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/dms/column/typed_column/float.pyx b/python/obitools3/dms/column/typed_column/float.pyx
index 1b13134..3a0702b 100755
--- a/python/obitools3/dms/column/typed_column/float.pyx
+++ b/python/obitools3/dms/column/typed_column/float.pyx
@@ -50,7 +50,7 @@ cdef class Column_float(Column):
         cdef   obifloat_t value
         cdef   object     result 
         value = obi_get_float_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIFloat_NA :
             result = None
         else :
@@ -62,7 +62,7 @@ cdef class Column_float(Column):
         if value is None :
             value = OBIFloat_NA
         if obi_set_float_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, <obifloat_t> value) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_float(Column_multi_elts):
@@ -77,7 +77,7 @@ cdef class Column_multi_elts_float(Column_multi_elts):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_float_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIFloat_NA :
             result = None
         else :
@@ -101,7 +101,7 @@ cdef class Column_multi_elts_float(Column_multi_elts):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_float_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIFloat_NA :
                 value_in_result = <double> value
                 result[elements_names[i]] = value_in_result
@@ -118,11 +118,11 @@ cdef class Column_multi_elts_float(Column_multi_elts):
             value = OBIFloat_NA
         if type(elt_id) == int :
             if obi_set_float_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, <obifloat_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_float_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, <obifloat_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_float(Column):
@@ -139,7 +139,7 @@ cdef class Column_tuples_float(Column):
         result = []
         
         array = <obifloat_t*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
 
         if array == OBITuple_NA :
             return None
@@ -178,7 +178,7 @@ cdef class Column_tuples_float(Column):
                     j+=1
                     
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <obifloat_t*> array, sizeof(obifloat_t)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
                     
         if array != <obifloat_t*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/dms/column/typed_column/int.pyx b/python/obitools3/dms/column/typed_column/int.pyx
index 1fcbf21..5d9150e 100755
--- a/python/obitools3/dms/column/typed_column/int.pyx
+++ b/python/obitools3/dms/column/typed_column/int.pyx
@@ -53,7 +53,7 @@ cdef class Column_int(Column):
         cdef   obiint_t value
         cdef   object result 
         value = obi_get_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIInt_NA :
             result = None
         else :
@@ -66,7 +66,7 @@ cdef class Column_int(Column):
         if value is None :
             value = OBIInt_NA
         if obi_set_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, <obiint_t> value) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_int(Column_multi_elts):
@@ -81,7 +81,7 @@ cdef class Column_multi_elts_int(Column_multi_elts):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_int_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIInt_NA :
             result = None
         else :
@@ -105,7 +105,7 @@ cdef class Column_multi_elts_int(Column_multi_elts):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_int_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIInt_NA :
                 value_in_result = PyInt_FromLong(value)
                 result[elements_names[i]] = value_in_result
@@ -122,11 +122,11 @@ cdef class Column_multi_elts_int(Column_multi_elts):
             value = OBIInt_NA
         if type(elt_id) == int :
             if obi_set_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, <obiint_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_int_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, <obiint_t> value) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_int(Column):
@@ -143,7 +143,7 @@ cdef class Column_tuples_int(Column):
         result = []
         
         array = <obiint_t*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
 
         if array == OBITuple_NA :
             return None
@@ -182,7 +182,7 @@ cdef class Column_tuples_int(Column):
                     j+=1
 
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <obiint_t*> array, sizeof(obiint_t)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
 
         if array != <obiint_t*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/dms/column/typed_column/qual.pyx b/python/obitools3/dms/column/typed_column/qual.pyx
index 4af9e34..7670f3a 100755
--- a/python/obitools3/dms/column/typed_column/qual.pyx
+++ b/python/obitools3/dms/column/typed_column/qual.pyx
@@ -57,7 +57,7 @@ cdef class Column_qual(Column_idx):
         cdef   int            value_length
         cdef   object         result 
         value = obi_get_qual_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIQual_int_NA :
             result = None
         else :
@@ -73,7 +73,7 @@ cdef class Column_qual(Column_idx):
         cdef   object result
         cdef   int    i
         value = obi_get_qual_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, offset)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIQual_char_NA :
             result = None
         else :
@@ -88,14 +88,14 @@ cdef class Column_qual(Column_idx):
         cdef   int      value_length
         if value is None :
             if obi_set_qual_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, OBIQual_int_NA, 0) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
         else :
             value_length = len(value)
             value_b = <uint8_t*> malloc(value_length * sizeof(uint8_t))
             for i in range(value_length) :
                 value_b[i] = <uint8_t>value[i]
             if obi_set_qual_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, value_b, value_length) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
             free(value_b)
  
  
@@ -104,11 +104,11 @@ cdef class Column_qual(Column_idx):
         cdef   bytes value_b        
         if value is None :
             if obi_set_qual_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, OBIQual_char_NA, offset) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
         else :
             value_b = tobytes(value)
             if obi_set_qual_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, value_b, offset) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
 
  
 cdef class Column_multi_elts_qual(Column_multi_elts_idx):
@@ -124,7 +124,7 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_qual_int_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIQual_int_NA :
             result = None
         else :
@@ -143,7 +143,7 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_qual_char_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, offset)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIQual_char_NA :
             result = None
         else :
@@ -171,7 +171,7 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_qual_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, i, &value_length)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIQual_int_NA :
                 value_in_result = []
                 for j in range(value_length) :
@@ -201,7 +201,7 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_qual_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, i, offset)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIQual_char_NA :
                 value_in_result = value
                 free(value)
@@ -230,11 +230,11 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
    
         if type(elt_id) == int :
             if obi_set_qual_int_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, value_b, value_length) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_qual_int_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, value_b, value_length) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         
         if value is not None :
             free(value_b)
@@ -252,11 +252,11 @@ cdef class Column_multi_elts_qual(Column_multi_elts_idx):
    
         if type(elt_id) == int :
             if obi_set_qual_char_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, value_b, offset) < 0 :
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_qual_char_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, value_b, offset) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 def register_class():
diff --git a/python/obitools3/dms/column/typed_column/seq.pyx b/python/obitools3/dms/column/typed_column/seq.pyx
index 79f2359..e77e076 100755
--- a/python/obitools3/dms/column/typed_column/seq.pyx
+++ b/python/obitools3/dms/column/typed_column/seq.pyx
@@ -54,7 +54,7 @@ cdef class Column_seq(Column_idx):
         cdef   char*  value
         cdef   object result
         value = obi_get_seq_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBISeq_NA :
             result = None
         else :   # TODO
@@ -77,7 +77,7 @@ cdef class Column_seq(Column_idx):
             value_b = <char*>value_bytes
         
         if obi_set_seq_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, value_b) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_seq(Column_multi_elts_idx):
@@ -91,7 +91,7 @@ cdef class Column_multi_elts_seq(Column_multi_elts_idx):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_seq_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBISeq_NA :
             result = None
         else :
@@ -119,7 +119,7 @@ cdef class Column_multi_elts_seq(Column_multi_elts_idx):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_seq_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBISeq_NA :
                 try:
                     value_in_result = <bytes> value
@@ -147,12 +147,12 @@ cdef class Column_multi_elts_seq(Column_multi_elts_idx):
         
         if type(elt_id) == int :
             if obi_set_seq_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, value_b) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         
         else :
             elt_name = tobytes(elt_id)
             if obi_set_seq_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, value_b) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_seq(Column_idx):
@@ -169,7 +169,7 @@ cdef class Column_tuples_seq(Column_idx):
         result = []
         
         array = <const char*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         
         if array == OBITuple_NA :
             return None
@@ -217,7 +217,7 @@ cdef class Column_tuples_seq(Column_idx):
                     i = i + len(elt_b) + 1
 
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <char*> array, sizeof(char)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
         
         if array != <char*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/dms/column/typed_column/str.pyx b/python/obitools3/dms/column/typed_column/str.pyx
index 9c12fa8..412d86b 100755
--- a/python/obitools3/dms/column/typed_column/str.pyx
+++ b/python/obitools3/dms/column/typed_column/str.pyx
@@ -53,7 +53,7 @@ cdef class Column_str(Column_idx):
         cdef   const_char_p value
         cdef   object       result
         value = obi_get_str_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         if value == OBIStr_NA :
             result = None
         # For columns containing character strings that should be evaluated:
@@ -76,7 +76,7 @@ cdef class Column_str(Column_idx):
             value_b = <char*>value_bytes
 
         if obi_set_str_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, 0, value_b) < 0:
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
  
  
 cdef class Column_multi_elts_str(Column_multi_elts_idx):
@@ -90,7 +90,7 @@ cdef class Column_multi_elts_str(Column_multi_elts_idx):
         else :
             elt_name = tobytes(elt_id)
             value = obi_get_str_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem getting a value from a column")
         if value == OBIStr_NA :
             result = None
         else :
@@ -115,7 +115,7 @@ cdef class Column_multi_elts_str(Column_multi_elts_idx):
         elements_names = self._elements_names
         for i in range(self.nb_elements_per_line) :
             value = obi_get_str_with_elt_idx_and_col_p_in_view(view_p, column_p, line_nb, i)
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=i, error_message="Problem getting a value from a column")
             if value != OBIStr_NA :
                 value_in_result = <bytes> value
                 result[elements_names[i]] = value_in_result
@@ -140,11 +140,11 @@ cdef class Column_multi_elts_str(Column_multi_elts_idx):
                 
         if type(elt_id) == int :
             if obi_set_str_with_elt_idx_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_id, <char*>value_b) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
         else :
             elt_name = tobytes(elt_id)
             if obi_set_str_with_elt_name_and_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, elt_name, <char*>value_b) < 0:
-                obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
+                obi_errno_to_exception(line_nb=line_nb, elt_id=elt_id, error_message="Problem setting a value in a column")
 
 
 cdef class Column_tuples_str(Column_idx):
@@ -161,7 +161,7 @@ cdef class Column_tuples_str(Column_idx):
         result = []
         
         array = <const char*>obi_get_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, &value_length)
-        obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
+        obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem getting a value from a column")
         
         if array == OBITuple_NA :
             return None
@@ -209,7 +209,7 @@ cdef class Column_tuples_str(Column_idx):
                     i = i + len(elt_b) + 1
 
         if obi_set_array_with_col_p_in_view(self._view.pointer(), self.pointer(), line_nb, <char*> array, sizeof(char)*8, value_length) < 0 :
-            obi_errno_to_exception(obi_errno, line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
+            obi_errno_to_exception(line_nb=line_nb, elt_id=None, error_message="Problem setting a value in a column")
         
         if array != <char*>OBITuple_NA:
             free(array)
diff --git a/python/obitools3/utils.pxd b/python/obitools3/utils.pxd
index cc4e38b..53d3765 100755
--- a/python/obitools3/utils.pxd
+++ b/python/obitools3/utils.pxd
@@ -5,7 +5,7 @@ from obitools3.dms.capi.obitypes cimport obitype_t, index_t
 cpdef bytes format_separator(bytes format)
 cpdef int count_entries(file, bytes format)
 
-cdef obi_errno_to_exception(int obi_errno, index_t line_nb=*, object elt_id=*, str error_message=*)
+cdef obi_errno_to_exception(index_t line_nb=*, object elt_id=*, str error_message=*)
 
 cdef bytes str2bytes(str string)
 cdef str bytes2str(bytes string)
diff --git a/python/obitools3/utils.pyx b/python/obitools3/utils.pyx
index 1699419..d3a1526 100755
--- a/python/obitools3/utils.pyx
+++ b/python/obitools3/utils.pyx
@@ -12,8 +12,8 @@ from obitools3.dms.capi.obitypes cimport is_a_DNA_seq, \
                                          index_t
 
 from obitools3.dms.capi.obierrno cimport OBI_LINE_IDX_ERROR, \
-                                         OBI_ELT_IDX_ERROR
-                                         #obi_errno # TODO
+                                         OBI_ELT_IDX_ERROR, \
+                                         obi_errno
 
 import re
 import mmap
@@ -83,7 +83,7 @@ cpdef int count_entries(file, bytes format):
 
 
 # TODO RollbackException?
-cdef obi_errno_to_exception(int obi_errno, index_t line_nb=-1, object elt_id=None, str error_message=None) :
+cdef obi_errno_to_exception(index_t line_nb=-1, object elt_id=None, str error_message=None) :
     global obi_errno
     if obi_errno > 0 :
         if obi_errno == OBI_LINE_IDX_ERROR :