Forum Netiquette Guide
The .gif has to be no larger than 85x85 so open the gif with gimp and resize the image (the main one that pops up) and then export as gif and make sure you check animation. Then try uploading again. If that doesnt work upload the image somewhere so I can get it and ill resize it for you.
Glad to help. If this is solved for you please mark as solved @ VastOne I think 90x90 is plenty big, if we have animated avatars that are to big it will take forever to load a page.