Corrupt database?

First of all, my compliments for this great product. I'm currently using the free version of SDP, but when I get some extra manpower I am convinced it will be no problem at all to get approval for buying the professional version. SDP seems to suit all my needs perfectly.

But now to the problem;
My installation of servicedesk plus 4.0 suddenly fails to start.
The logs mention something wrong in the database. MySQL is functioning though. MySQLadmin reports no major errors.
When I replace the 'mysql' folder in SDP's root by a fresh copy, all works fine. (but without all of my collected data of course... :()

It seems to me there's some corrupt data in the database. Is there any way to check and repair the contents of the database?

Thanks in advance for your reply.

B. Casander
the Netherlands