That's just it, there is no specific error message. When I enable chatbox in my admincp and then go to my forums URL, I get this:
"Server error
The website encountered an error while retrieving
http://www.livegroupbreaks.net/vb/. It may be down for maintenance or configured incorrectly.
Here are some suggestions:
Reload this webpage later.
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request."
When I go back into admincp and disable the chatbox, then go back to my forums URL, the forums are back working again. Sorry I can't give you more info, but that's all there is to it that I know at this point.