Can't resample GIF on Mac

[Shawazi]

I've tried every way to resample a GIF and it just won't work on mac.

$source_id_original = imageCreateFromGIF($destination) or imagegif($destination) or imagecreatefromgif($destination);

Since it works on my PC i know the permissions are fine and evreything. The $destination variable also has the correct value when echo'ed to an image that does exist.

[Shawazi]

The generic error is :

Unable to create resample for filename.gif