Debug mode???

Im being a pest with these questions about avatars, but every time i try to upload a good avatar thats within the limit or lower, it goes to this error.

DEBUG MODE

Line : 179
File : usercp_avatar.php

Is it a problem with my computer, the server, or just the avatar itself?

Is it within the kb limit?

I got that same error a LOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOONG time ago when I was trying to get this avatar on. I don't know how, but mikesword got it to work.

It might have something to do with the fact that you've already uploaded the avatar before with the same filename. Try renaming it and uploading again. I'm probably wrong, but I think it's happened to me before.

Also, perhaps you should try OptiPNG?
http://optipng.sourceforge.net/