I can't replicate this at all. I've asked Gav to take a look.
I am wondering if you've uploaded so many images there might be a soft limit of some kind (although you are on a gold unlimited uploads plan!).
It's a simpleton suggestion, but you might try logging out completely and logging back in. That might clear any conflicts in your profile.
update, I was able to change my background to the pic I wanted, but I still have to choose a blank picture icon. it was the second to last one.
when I chose my avatar is showed the photos finally.
(I went to a Chrome browser like suggested)