XF 1.3 Encountering Error

I installed XenForo earlier this evening and am able to access the Admin CP but keep encountering an error when trying to launch the homepage. Any ideas on what could be causing this?

Fatal error: require(): Failed opening required '/homepages/5/d540021216/htdocs/library/XenForo/Autoloader.php' (include_path='.:/usr/lib/php5.4') in /homepages/5/d540021216/htdocs/xenforo/index.php on line 8

Thanks in advance.