August 2017
i was downloading sims 3 again and it said it's ready to install, (i'm on macbook air) so i installed it and everything and it said "Sims 3 is ready to play" so i went to open it up and it's showing me this.. (files below) i'm currently running on the latest version of origin and everything is up to date, i cleaned everything out and it still isn't working.. Any suggestions?
August 2017
Origin isn't relevant to playing Sims 3 on a Mac, only to download it.
Your issue is covered extensively in this thread - http://answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-Unknown-Error-issue-in-Sims-3-in-El-Capitan-Sier...
Please read the opening post and the accepted solution. If you have EP/SPs installed which aren't showing up, a link to fixing that issue is also in the opening post, as is the link for editing certain files if you have unsupported Intel graphics in your Mac.