Right click on the game in your Origin games library and select Repair Game. If that doesn't work please try this solution - http://answers.ea.com/t5/The-Sims-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612394#M815
@OhhliviaN94 When you did the "super repair" (moving the app to the trash and redownloading), did TS4 download again? And what OS are you running? There are a couple of issues related to operating systems that have surfaced recently.
The other easy troubleshooting steps are running the Origin reset tool for macs and disabling Origin in-game, and then trying again. This can help with both download and launch issues.
https://help.ea.com/en-us/help/origin/origin/how-to-reset-origin-on-mac/
If that doesn't work, try pulling your entire TS4 game folder out of Documents and onto your desktop. When you launch the game again, a clean folder will spawn with no contant. If you can play a new game in this folder, you can start moving your saves and other content into it from your existing game folder.
