The installer has been fixed for all versions of Vista (at the least the ones I can check with). Home editions seem to be a little more accepting of administrator rights. Vista Business and above require confirmation of administrator rights each time HC Pro is launched.A new update will be available for AutoWallpaper 2 soon. This update changes the location of the preferences files so that multiple users on one computer can have their own categories and effects settings. There is also an alteration to the random picture routine so that the images selected are a lot more random. Finally the update will add positioning routines that should help if you have your monitors ordered in reverse (for example secondary monitor on the left of the primary).