Hi, I used the steam feature under multimedia and had the same issue, firstly I went to the store to verify and found everything was white with links, so I right clicked and hit refresh, this got the "shape" of things back however some pictures were still missing as displayed here:
furthermore after searching google "ccleaner bugging steam" I was able to find this topic available on steam forums: http://forums.steampowered.com/forums/showthread.php?p=21594606
scroll down to the username afarnsworth who works for valve and references a fix that worked for another user with the same iss
