Everytime I try to change my icon, it gives me a weird message in code and It wont let me change my icon! Please help me figure this out!!

The picture you want as your profile icon must be less than 1 MB in size and must be .jpeg, .jpg, .png, or .gif format.

The way I did it is to get an image out of Google Images, put it in Computer, and then change it. That might help.