Re: Nothing works
Please can you provide more information about your Mac. Instructions on how to do so here - http://answers.ea.com/t5/The-Sims-Mac/READ-FIRST-Sims-3-Mac-Help-Guides-and-Troubleshooting/m-p/4756624/highlight/true#M4
These two threads may also give you more information about the incompatibility of the Sims 3 on most model Macs:
Unsupported Macs - http://answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-The-Sims-3-Issues-playing-on-newer-post-2013-Macs/m-p/4935394#U4935394
'Unknown Error' in El Capitan or Sierra - http://answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-Unknown-Error-issue-in-Sims-3-in-El-Capitan-Sierra/m-p/5725514#U5725514
