UBB.threads PHP Forum Software Community Forums UBB.threads 7 Installation and Upgrade Support Error message after successful upgrade 7.02 -> 7.2

Please applologize my ingnorance, but I am a realy beginner.

Here the linke 'FULL_URL' => 'http://www.uncertaintymanager.com/ubbthreads' with this link you directly see the error.

But I do not know where to check, because I can not access the control panel at all. I Just get this message and not more.

I also do not know where to set $debug=1

Thanks a lot