Not sure why this would be happening, but I put the FFP in the Shared documents folder along with WallpaperSwitcher and when I run FFP logged in as the Limited user, it gives me a popup first that it can't do read/write functions, and then it runs. Logged as Admin it is fine.
When I was first using FFP 3.1BETA2, it wouldn't go to the home page. I had to manually click the homepage. I reinstalled with FFP 3.01b and I get the same message, but then when I click okay it loads up the homepage.
Running on a WinXPsp3 on a dell, if it matters.