Bugfix (Joomla 1.6) - Site Rendering Problem

Our homepage ([login to view URL]) will not load properly, sidebar won't show: Failed to load resource: the server responded with a status of 404 (Not Found) (for a css file) This error does not appear on other pages and they will load fine. We just need to resolve this and the winning bidder will be paid 100% Two components have been installed on the site (RSEvents! and our template JSNEpic) - both of which have documentation manuals. We can give SSH/SCP access to the bidder and Joomla access to the backend