Hi-
It would help to know the exact error message you get, and whether you are getting the same error in all or just some of the games. But here are two things you can try:
First, it is always a good idea when you create profiles with the toolkit, to log in to the profile and run all the applications once before installing the restrictions. If possible give that a try, and see if you can still run the game from a limited, but not locked down account.
Second is that some of these games need write access to their own program directories (definitely true of MS

. To do this, log in to your admin account and:
1. Browse the hard drive to C:\Program Files\
2. Find the program folder for one of the games.
3. Right-click on the folder and choose Properties
4. Click on the Security tab
5. In the top half of the box, select the Users group
6. In the bottom half, place a check next to Modify in the Allow column.
7. Click OK. Try running the game in the locked-down profile.
Dale