A couple of people have pointed out that the wallpapers weren't properly going through to the larger versions; this should now be fixed. Now I just have to fix the little versions to be less pixelated!
If you're having problems with an image, or would like a higher-res version for your desktop, please comment or drop me an email. To the people who've emailed and let me know how much they're enjoying their new desktop, thank you! I really appreciate the feedback.
I'll be posting a couple more papers tonight, too, so stay tuned.