Profile pictures

okay so I know the whole issue of profile pictures has been addressed on many pages already and I understood it but my issue seems a bit different. I DO see the profile pictures of most contacts (which makes sense as some don't have me as their contacts so I can't access their pictures), but if I load a picture of any contact whose picture I already partially see, then after loading, it turns black. almost as if it failed to load. so in my case it's not about NOT seeing the pic, coz I can see it next to the name, but once I try to view the picture from his or her profile, it loads, then instead of showing it to me, I get a black screen… help!!!