Well, I did the one thing I missed here: adding my user name to the permissions of the folder and got it to work again, but then I decided to do some experimenting that I think shows that there's no real consistancy to it at all yet.
I did 5 reboots, and the pattern was somthing like this.
1) Did drop down - run as admin. Didn't work, but gave me a krnl error.
2) Did drop down - run as admin. Game started.
3) Ran from short cut - Didn't work - krnl error.
4) Did drop down - run as admin. Game started.
5) Did drop down - run as adming. Didn't work - msvcrt.dll error.
I'm going to give up testing now, and hope that if I reboot enough more times that it will actually run, so I can play. Wish me luck.