Okay, I'm just getting my XenForo installation up and running. When I enable 'Use Full Friendly URLs' the main page works great, but then when I go to click on any of the forums (such as this one: http://wranglerforum.org/categories/parts-for-sale.24/) it causes a 404 Not Found Error. Not sure what the issue could be as mod_rewrite is enabled on my dedicated server. Am I missing something? It's worth noting that each forum has it's own custom URL portion.