Running on mac mountain lion 10.8.4
ERASE ALL THE SIMS 3 FROM YOUR COMPUTER AS MUCH AS YOU CAN FIND AND EMPTY THE TRASH
there are two ways this may work:
so ive had this problem for two days straight I've gotten errors from unknown error occurred to the icon just disappearing. the way i have found that this worked is i logged into my GUEST login in mac and downloaded it there. Then went back to my main login to update and play.
That may work for some. But this worked for me the BEST
I plugged in an external drive like thumb drive, usb storage, something with more then 6gb available. I then went to GUEST login page and installed the sims 3 on that external drive. I went BACK to my main login opened the game and updated. I Launch the game from the thumb drive and its working for me!
[img]http://i12.photobucket.com/albums/a230/podlesnypics/ScreenShot2013-04-22at123607PM_zps4489f37a.png[/img]