Chainsaw Repair

I can't get my PB sourced avatar pic to work.  I was able to get one of my PB sourced pics to show (out of the many that I tried), but it wasn't the one I wanted to use and is a crappy pic.  The avatar pics that I've use (and am using) on the 'other' really popular board don't work here............despite their meeting the size requirements here.  The 'other' site has stricter/smaller requirements than here.........and the pics work there but not here.  Strange.....