Windows – System Policy won’t let me install TurboTax

I found this answer on the Relic News forums which basically suggests installing the vcredist file manually:

see the directory path in the error message? its probably because the difference between the temp directory in 7 and XP (i don't know, i'm just gamefreak).

so, in the game folder, open "data" folder, look for the "vcredist.zip" and extract both files in the same folder. after that, double click "vcredist.msi", browse path of the file itself. it will install the software-that-cannot-found-in-temp. after finish, you can continue installing the game.

I was able to get around by going to this location in the registry:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System

Inside, there's a key called Wallpaper. I deleted it and re-set the desktop background, and it worked.

You'll have to do that every time you log on though, as group policy refreshes itself. (It can also be set to refresh automatically.)