Well, I was looking through the code, and trying a few things out. I found a clean solution that was even quicker than the dirty one. In fact, if I were to guess how it will be fixed in a future realease, this would be my guess:
Change this line in groupcp.php (around line 33) from:
Code: Select all
global $lang, $images, $board_config;
to:
Code: Select all
global $lang, $images, $board_config, $phpEx;
Still, use at your own risk.