title: "End of script output before headers" on CentOS, but working on other LAMP stacks
body: <p>I've set up a Centos 6 + CPanel 11 VPS, and everything is as it was out of the box. I've installed Phorum 5.2.20 in the public_html directory, but Phorum is causing an error 500. The error log reports: </p>
  
  <p>[Mon Jul 27 11:21:57.770447 2015] [core:error] [pid 14342] [client x.x.x.x:42531] End of script output before headers: admin.php </p>
  
  <p>The code works fine on my Debian LAMP server (and several other non-Centos/CPanel LAMP stacks I've used to test this), and Wordpress and some other stuff runs fine on the CentOS machine.</p>
  
  <p>I've tried other code too, and it works on my other servers, but doesn't work on CentOS.  Phorum is the only code that matters, so I made question focuses on that. I'm also reluctant to edit the core files of Phorum.</p>
  
  <p>Any ideas?</p>