OP Manger is not working anymore (again). DB problem?

Hello,

I hope this time my post gets not removed. Because I have a big problem with OPManager, which I can't solve.

I have this problem now the second time. Some days ago, OP Manager worked. But then from one day to the other, it stopped working. I get no more monitoring data, or new alarms! When I go and press Add Device I get only a blank page!

I'm afraid there is no error message or anything that might help me to find the reason of this problem.
Looks like the Database has an error. I tried to fix it with the RepairDB Batch in the local Directory, but it's still not working.

Has anybody had the same problems, or can somebody halp me?

Last time I had this error the only solution to solve the problem was to reinstall the hole application, and I don't want to loose all my collected data each three months.

Thanks for your help.

Best Regards