July 2015
I downloaded Sims 3 yesterday and though it installs correctly, it won't open or allow me to play. Half of the time when I open the launcher it tells me I can't play because the game is already in use, which it isn't, and the other half it allows me to launch the game but freezes before it can even get to the load screen. I've uninstalled and reinstalled four times, and I just want to play the stupid game.
July 2015
What Mac do you have? If you have a Mac with any of the following graphics the game is not compatible:
You can try the workaround here, using the relevant details for your graphics card.