Well, I'll wait for the update and try it again. But you should know that I discovered the same problem on another computer and the same problem was reported at the game forum I use by 2 other users.
Hope the update takes care of it because the game looks really great!
The demo freezes ---- ---- got to the new "wall", game froze. So I exit, click continue, takes me back to the freeze spot. Game looks really interesting but demo is unplayable. The post about this has been up at Steam with no reply.