[CVMagic]

The issue with the deviding by zero in this hack is that you overlooked the fact that the hack does not define what $maxattachwidth & $maxattachhieght are... so besure to add those values to be edited in the admin panel....

^_^ by the way I coded the original version of this hack for vB2, look in the beta section for it, it should help you with some of the bugs in this one... FYI: Safemode shouldnt affect this scrpt as long as its not writing on to the filesystem. Also it helps to cache the resized images because trust me doing it on the fly will bog down the system in the long run.
Oh, I almost forgot if you have any questions feel free to send me a PM.