Upgraded server to PHP 5.3.28 and Images stopped working

Question

We upgraded the server to PHP 5.2.28 (Rackspace) and suddenly our full size images stopped working. By stop working I mean it did not render and the page load stopped at the point of the full size image loading. (White screen) No error message in any logs

The site has a custom OnePica image gallery loaded. We are debugging but I am hoping someone as a light bulb light that comes on as soon as they read this :)

Answer 1

Resolution:

Rackspace installed their package of Ioncube loader and during the installation they realized the version of PHP also needed to be upgraded. Somehow they missed the fact that some of the php modules also had to be installed. The module in question is/was PHP GD