Server error

[R3vel]

Hi all

I have installed the software on server, everything works.....except, when I click on catalog in back office, I get the following messege. Before anyone says, yes its a free server, im just using it as a test bed so I can work out the bugs

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log

Where will I find the files that deal with cataog side?

Regards
Andy