What does this ERROR MESSAGE means:

"Error loading file - Loading form or the data environment - record number 12. Database in invalide. Please validate."

I have done the command VALIDATE DATABASE and according to that my database is valid. I have also tried loading the form on an old database (a backup) and it worked just fine. If I do a trace, the error message pops up before I can trace any code.
I have removed(PACK) some recordes and ADD and REMOVED some tables since I did the backup on my database.

"record number 12" what does it mean and how can I use it to find the problem?

Thankes in advance.