User blog comment:Mippish/Uploading Photo Problem/@comment-3225604-20140405002456/@comment-4189499-20140407100558

Hmm, sounds like it should work. Sometimes Wikia has to move some pictures around on their servers, stopping uploads for a bit. Why don't you try again now some time has passed? Maybe convert the file to another format such as a .jpg and try re-uploading it. If that still doesn't work, and you feel the file fits with every other criteria, then you should send a Special:Contact to Wikia, because it's probably a bug.