Corupt Database

I develop databases for the company I work for using Access 2000. Within each database I use quite a lot of VBA code and modules. After completion each database is then replicated and the tables are split and placed on the server to ensure the data is backed up.

Now and again If I modify any of the code within the database or add anything new to the database I am getting quite a lot of error messages that dont make any sense. If I click on a button for instance I am getting a message saying"The expression Onclick you entered as the event property setting produced the following error: can't perform request operation". . I know for a fact that the button used to work as I have tested it many times, but for some reason it looks like it has gone corupt. I also get Invalid data format errors as well.

I woul be very greatful if anyone knows why this is happening and could give me some advice.

Thanx

Andrew