Following steps might help you to resolve the issue:
1) Please download and install the latest version 2.8 of the Microsoft Data Access Components (MDAC) from the Microsoft Website. (Available at the time of writing)
http://www.microsoft.com/downloads/details.aspx?familyid=6c050fe3-c795-4b7d-b037-185d0506396c&displaylang=en
Try to repair the Backup Exec application. This will replace the corrupted files.
http://support.veritas.com/docs/253199
We hope this helps.