I have two installations of this software and they're both blank this morning. They're both on a cpanel/centos server w/ cpanel version 11.40.0 (build 19). I believe a cpanel auto-update caused something..

There is nothing in apache's main error log

The access log for the site is showing that the page loaded w/ a 500 error w/ no additional info:
72.94.51.xx - - [10/Nov/2013:09:23:17 -0500] "GET / HTTP/1.1" 500 - "-" "Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/30.0.1599.114 Chrome/30.0.1599.114 Safari/537.36"

The error log in the document_root for the sites isn't showing anything helpful about the blank pages.. but has a few warnings which have been going on since August:
[10-Nov-2013 09:23:17 America/New_York] PHP Fatal error:  Cannot re-assign auto-global variable _FILES in /home/xxxxxx/public_html/include/functions.php on line 275
Running php v5.4.19
Apache v2.2.25

Is there a way to turn on error codes in the software to see what its complaining about?