Tim Maxey .NET Technology Blog & Resources
I came across the problem of when I wanted to update my Android SDK, or add Google Maps api, or add the Google Checkout, Licensing packages, I'd get "nothing installed" and some crap about can't update the packages, check the path etc, etc..
Well come to find out, you got to go to the start menu, Android SDK Tools right click on the SDK Manager and run as Administrator...
I just happen to try that and it worked! Hope it helps someone else out there!