I have done somewhat of a big overhaul of the avatar selection. It is very likely your avatar is missing now from your profile (if you had one set that is). This is normal. Just go to your user control panel (Click "Quick Links" on top menu, then "user control panel" on drop down menu). Then, click "Edit Avatar" on left column once your inside your control panel.

Reason
I deleted a lot of low quality avatars and added newer, higher quality avatars. I also cleaned up some categories, removed some that were just taking up space for nothing.

Enjoy.