that's the same installer from before. did you try running it from a folder on your local C drive? because i can't get it to work right from there either. it's working properly though from the flash drive.
when i tried running it from the C drive, HostDesktop was found from a previous install, in the Recycle Bin. and my desktop folder and environment, became based off a folder in the Recycle Bin. after emptying the recycle bin...it worked from my Local C drive...but the wallpaper swapper didn't. so there is some wierdness when trying to run it from the C drive.
Try it from a flash drive though...and let me know what happens...