Same problem here. Looks like a DRM-type failure.
Hopefully this will not be an issue with the "retail" game. I hate phone-home DRM; particularly in single-player only games!
This is for the beta only. Non-beta patches only DRM when the patch is installed, after that you can run the game without an internet connection.
The reason given for having the DRM in the beta is because it allows them to change XML values on the fly.