error #11010 and corrupt file

This is not something that I get all the time, but at least once a day I get the following errors and I have no idea what to do.

I have gone into the system and done a purge a repair and a back up on both databases.

1. DBISAM Engine Error #11010 table or back up file "package" does not exist

2. Database has corrupt files

HELP! Anyone know how to fix this?