Solved folder preview pics wrong, can't change them

As you can see from this screenshot, I've somehow gotten the same picture as folder preview on most of my picture folders. But, as you can see, not all of them. Also, I've managed to change some of them back to what they're supposed to be, and I've managed to change some of them to the default folder icon without a picture, but most of them don't do anything when I try to change them. (This is a small sample of the problem; I have many folders and sub-folders, most of them with the same preview pic.)

I've tried doing the following on a lot of different folders: On the folder's Properties>Customize tab, I've tried all of the options available: I've tried changing the "optimize this folder for", I've tried choosing a new picture, restoring the default, and changing the folder icon. I've tried doing these things on folders with no sub-folders, and also on folders with many sub-folders. At first I was able to change a few of them back but now nothing makes a difference.

How can I get this fixed?
Thanks

Well, with 260+ views and no replies, I assume no one's ever seen anything like this.
It was apparently just a weird glitch in Win8. When no one here (or at MS) had any ideas, I copied the problem folders to the desktop and they then had the correct pictures on them. I then copied them back to their original location and they still had the correct pictures. FYI.