Hello everyone,
Thanks for the great feedback so far. A number of people have reported crashes and we have the first update incoming that addresses all but one: If you have a problem where the game just hangs and does not launch, we have added more info for the log.txt file (in your installation folder) that should help us diagnose this problem better.
The update is live now!
If you get the update, you should still have the hang, but please send us the log.txt so we can get the additional information.
Thanks to everyone who is helping resolve this issue.