This is a fairly minor update to my Wallpaper Changer app. See my first post on Wallpaper Changer for a description of the features. The only real thing that's changed here is that I've added a hidden window to act as the main window, rather than the main "Wallpaper Changer" window. The advantage is that you never see the "Wallpaper Changer" app in the Alt-Tab list (unless it's actually visible) unlike before.
There were some other minor bug fixes, but I won't bore you with details. Just download it now :)