Problems uploading avatar from link location

When i try and change my avatar i get this:

Warning: fread(): supplied argument is not a valid stream resource in /includes/functions_upload.php on line 122

Warning: feof(): supplied argument is not a valid stream resource in /includes/functions_upload.php on line 120

what's up with that?

Pops

EDIT: Changed my Avatar, but that problem has happened to me before