animated images dont work?

[derangedtaco]

anytime I try to add an animated image to the gallery, the thumbnail for the image gets really messed up...we're talking random black lines going down the front

why does this happen, and is there any solution?

[Joachim Müller]

http://forum.coppermine-gallery.net/index.php?topic=42473.0
http://forum.coppermine-gallery.net/index.php?topic=40957.0
...and some other threads...