If anyone have an idea...
When I try to UPDATE the column TipoAyuda of the table AyudaEcon I receive the message 'Invalid Column Name CodAyudaEcon' wich is the primary key. I can't INSERT rows neither.
However, if I do the following:
WHERE CodAyudaEcon = '0001'
I receive the expected results.
I can also select the column name from the Sysobjects table of the database.
What can be happening on this table?