Thanks Boon Seng Wong

Do you think the error can be caused even by reports that are part of the project but not printed at the moment of the crash ?

Example:
I print an Invoice and it works fine.
Then when I open the Purchase screen do create a new purchase, the application crashes before I even try to enter details or click the Print button.

So should I clear TAg, Tag2, EXPR(partially) fields for all reports ?
I thought that cleaning the ones involved in the operations that cause the crash would be enough to see if the solution works.
(I'll clean them all, of course, I'm just trying to understand if there's any logic in what I'm doing...usually there isn't...he he he)