Wheels, yikes, Hooper just reported an error. I must've supplied you with a bad page.inc.php file at some point (it used a custom wrapper we had for the CFL to test out a draft chat there a while back).
The affected file is page.inc.php. This will cause a blank screen or error message if not replaced. It references wrapper_chat.html instead of wrapper.html.
page.inc.php
My fault, sorry!