Forum Just Stopped Loading
 

I am still running 3.8. My license expired on April 5th but I did by v. 4.0 license. I just haven't upgraded. As of today, my forum no longer loads the PHP portion. If you go to http://www.websitebabble.com only the header loads.

Does this have anything to do with my 3.8 license expiring or something with PHP and my host? I think I am still running PHP 4. Do I need to request 5? Why would my forum just stop loading?