UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Bug Reports 6.5.0->6.5.2 upgrade, some board sgive "Access denied"?

I have this problem, not with forums but with a couple of threads inside of a forum.

This happened when i went from 6.5.2 to 6.5.4.

I can access the mysql, but do not how to make it work or do anything... sp P L E A S E type slow, so I can understand <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />