[Brad]

Its one of two things.

1: You have done some sort of code modification to the .php files that has caused a error, in that case you need to post a support thread at vbulletin.org if you cant de-bug it yourself.

2:
You have made some sort of modification to your templates and it is causing the error, then you need to open a support thread here (not in the lounge).

Regaurdless of which one it is, you will not get much help if you do not supply more information then 'it dosent work'. Tell us what templates you had modifyed, give up some code so we can spot error's for you.

You can probbly find out what is causing the error is you backtrack your modifications to the templates and files. Once you find out what is causing it then you can start de-bugging.