Some Icons Not Showing

[Ghamper]

As you can see from the attached image several of my icons are not showing up and I don't know why it just happened all of a sudden. Ive tried restarting and running a disk cleanup and nothing works. Any help would be appreciated.

 

[cdmj]

I had this problem for my desktop since I want to use icons I am familiar with for special shortcuts. My icons are stored in dll libraries that I had to convert to 32bit. I found by accident that when changing icons if you click the "Restore Default" button after selecting your icon, the icon shows on the desktop. Don't know why. haven't had problems with any others yet.