When I upgraded my currently 6.5 UBBT from 6.1.1 to 6.2 I ended up in troubles. Most probably while running the altertable-6.1-6.2, step 3; where the Messages table is made to use the uid instead of username. I started all over and deleted thousands of old messages and that seemed to do the trick...

But, after going all the way to version 6.5 no private messages are visible anymore for anybody. I didn't care too much at first, but now I'd like to try to fix the error that occurred.

Private messages sent and recieved after the upgrade all show OK, and no other problems have occurred.

Does anybody have any idea what could be the problem, how to investigate this, and how to fix this?

Tjerk.