My cp is at http://www.clanbeowulf.org/clanbeowulfcgi/cp.cgi (doesn't work).
I had the latest v5 (v5.47e?) running fine then decided to upgrade. I thought I followed very strictly. When I was done, I was able to log into my CP and I was pretty sure I did everything in order. Everything came back "OK". However, when I was done the forum ultimatebb.cgi wouldn't come up. (Internal Server Error).

I went back and redid everything.... same. Then I tried getting back into v5... no go.
Now, ubb6_test says everything is "OK" except the paths are now not working. Also, the CP doesn't come up anymore (500ISE). Hello's are fine.

Next step gurus?