This mod pulls in the Threads header as it does in pp-inc.php however it pulls a header that uses the $tbopen and $tbclose variables. If you pull the header from pp-inc.php it does not include the new templates.
Yeah I think your right it might be there server. If you want to post the site url I can see if I view the same thing or if you do not want to post that url you can always PM me. I would be more than happy to help try and solve the problem.