Having got it loaded as described above, I've never needed to use the Run as Administrator (is this from running the Demo, which I've never done?) facility.
The main glitch I have is if I've got RB running and open other windows using IE, when I go back to RB, sometimes, it will have frozen up and has to be re-started, but I don't know if something I run is the problem or if it's an RB glitch.