Race Driver - Grid fails to start

I downloaded the demo of Race Driver - Grid from the Codemaster's web-site. While it installed and lets me create a profile, to start the game it states "Loading", with no hard-disk activity and just stops at that point. Leaving it for 10 minutes results in nothing happening. Anyone else experience this?

Thanks.

Are you running it as Administrator?
Have you tried Compatibility-mode on Vista or XP?

Greetz Ronald E