I just installed the BTTF game and it launched fine on first run. The game crashed on me and I had to restart it. When I click "play" nothing happens. When I rebooted and tried again nothing happens.
I'm running Windows 7 64 bit. I'm sure this may apply to Windows Vista as well. In order for me to get the game to play at all. I need to right click on the Launcher and click on Run as Administrator. This is ridiculous IMO because not all kids/teens are going to have admin privileges on their parents computers and there's NO reason why a launcher should need admin rights.
If you are having trouble launching the game and you are on Win7/Vista. Try right click->run as admin and see if the game launches when you click play.