Try right clicking on the empty box and choosing show picture. If that doesn't work, check your firewall. Also, try clearing out your cache and refreshing the pages.

I just had this happen and knew it wasn't my firewall because I could open the picture using FireFox. I did right click the red x box and selected "show picture," and that didn't work. Then I noticed something else on the right click menu besides the "show picture" option, and I clicked. I can't remember what it was, but it brought up some privacy / cookie settings where I saw that somehow the website on which I was trying to view the picture was set to not accept cookies. Once I changed that (right in the same window as the block list), I was able to view the picture on the web page.