An error occurred on the server when processing the URL. Please contact the system administrator

Fix: IIS Settings:

            cscript 

%systemdrive%\inetpub\adminiscripts\adsutil.vbs set w3svc/AspScriptErrorSentToBrowser true      (to allow error message send to client)

by default, IIS 7 (ASP) does not send errors to the browser.  Enable the setting and see what error is displayed.  Also, make sure classic asp is installed.