HELP!! Can't get into commit!!!

Over the weekend our server crashed and had to rebuild the array. Now I can't get into CommitCRM. I am getting this error message...

Error accessing database. Check network connection and try again. DatRRemindersTbl: Error 5016. Advantage could not find an index order with the specified name.

This is the error message when I open CommitCRM and I can't get any further. Apparently the index file is missing but I have no idea how to make it rebuild it.

Hi Miranda, we've already replied to your email.

Thanks,
Sheli

We are also getting this error message regarding DatRReminders.Tbl Error accessing database. Check network connection and try again. DatRRemindersTbl: Error 5016. Any solution would be much appreciated.

We've already replied to your email about this.

Guys we have this exact error.
Ads.exe was stuck at 100% cpu.
Restarted CommitCRM service.
Please proved what we need to do to fix this ASAP.

We've already replied to your email about this

Thanks.