October - last edited November
Users have reported that the game screen can sometimes flash red for a second or until they interact with the game window again. Reports so far state that it can happen:
Sometimes the game may crash after this happens. If you are experiencing this please post here and attach the DeviceConfig.log file to your post. You can find this file in the Documents > Electronic Arts > The Sims 3 folder. Please also explain exactly what you were doing in-game when this happened, whether it disappeared and what you did to make it disappear, or whether it crashed the game/your Mac.
I experienced this when changing screen resolution in windowed mode, it would flash red for a second when switching resolutions.