Same issue - Memory fix did not resolve the problem
I just installed PhotoPost Pro on vBulletin 3.0.7 and I'm having the same Admin upload issue.
It says processing image list and then no photos are displayed.
I added the line to both the uploadphoto.php and bulkupload.php as shown below with no resolvement.
define( 'THIS_SCRIPT', "uploadphoto" );
In my case, I don't see anything in the uploads folder.