[kh99]

I think this is because the latest versions of php have some minor issues with the older versions of vB (I don't know the exactly version numbers where problems occur, but you can probably find info by searching for that error message on vBulletin.com). Is that 'thanks' thing a mod? Possibly that's the problem and there's an updated version available?

This message can be elimated by finding this:

error_reporting(E_ALL & ~E_NOTICE);

and changing it to this:

error_reporting(E_ALL & ~E_NOTICE & ~8192);

But I can't tell you exactly where to look for it.