After a 273mb update the game now locks up with music playing at the loading screen, (black screen with blue loading wheel in bottom left corner). prior to the update the game was working fine and nothing else on my system has changed.
I think whatever you guys have done to fix something has messed up something else 
Contact support.
well i followed the link to support from steam forums, sent me here to report bug / error, where else do i contact support from and how?
Edit: aahaa found where to submit a support ticket, and have done so.
A lot of people are having this problem so it’s not isolated to myself.
Ok so the support ticket they have just said to go here and post a bug report :01414: :fed015: