This is not a problem of your copy!
Its a problem many gamers (even the ones with ORIGINALS) have.
The game gets stuck in a loading screen somewhere and all you can do is finishing the game and leaving it to desktop...
I tried everything possible to get it running, but I think we will have to wait for a patch to fix that bug.
Try getting a few tips at the forum at nolfnews.com.
Good luck!!

p.s.: If you succeed-let me know your trick!!!