Game stops functioning

I´ve noticed a recurring problem after the august 6 update. Whenever I play, the game suddenly stops functioning. I´m suddenly unable to move things around in build mode, and i´m not able to get my sims to move around or actually do anything. The game is also stuck in pause mode. I can move around, click on things, select objects, but not able to do anything after that. This also affects saving the game, so that i´m forced to force-quit the game. Has anyone else had similar problems? Is there any solution other than waiting for the next update?