I'm migrating from 4.6b I'm using Delphi 7.

I'v getting access violation when trying to open some TIBOTable.

It seems the problem is some fieldnames on ColumnAttributes.Strings that
do not exist anymore.
I also got problems with some ColumnAttributes.Strings having
NOTREQUIRED for not null table. Setting the field for REQUIRED and
cleaning ColumnsAttributes fixed it.

Cleaning those fields fixes the problem for opening the table.

But i'm still having some acesss violations when showing some forms.
I'm wondering if it could be something similar with the problems above,
but haven't found anything yet.