I am not sure what happen after update. This is happen every time I start in Massacre map. The screen goes horribly wrong and I can't play it at all.
I am using Mac OSX.
Many Mac OSX users have been facing graphical issues with this map lately. There is already a topic for this issue, next time, try to use the search option before creating a new topic to avoid double posting.
Duplicate: Problem with Massacre map on Mac OS X
Customer support service by UserEcho