July 2016
@Bluebellflora, Hi it's been a while, I just want to share my experience about how i can solve this problem, I erase my Macintosh HD and re install all the things, and it's all working as normal again, but there're others way too, you can go to library-caches, and erase all things on there, and find saved application state on library, and also delete all things on there, you can restart your mac, and empty the trash :D
July 2016
I'm having this problem now i just erased all my caches in my library as well as in the saved application state folder. I'm still unable to restart my mac due to my sims 4 not being able to force quit (I'm not able to force quit because it says 'application not responding") . I've already tried repairing sims 4 in origin and it didn't work,
July 2016
I also got the same problem before, but I erase my macintosh HD, and re-install all things on my mac, it's like reset your mac,
restart your mac with holding command + R keys, click on disk utility and continue, select your start up disk, then click erase. once it done, re-install your mac, and the OS will be the first OS when you buy your mac, reinstall all origin and sims 4, then you'll be able to play again, because we got the same problem, i solve mine using that. please let me know if you have further question, I'm happy to help
July 2016
So what version of OS X are you now running?
For anyone following amazingcupcakes' advice to wipe your Macintosh HD and reinstall the operating system - BACK UP before you do so. Wiping your hard drive deletes all information on it.
August 2016
Can you opt into the Origin beta and see if that helps?
May 2018 - last edited May 2018
Hi.. I have purchased and downloaded Sims 4 yesterday, and I also have moved some of my CCs into the mods folder. However, some of my CCs did not appear properly (broken) so I tried to take out some of the .package files today while the game is open (I think i shouldn't have done this). After that I went to the closet to change my sim's clothes and when I press check to go out from the closet, the loading page appeared and I cannot do anything. The green crystal(??) is flicking really fast and I could definitely feel that something is wrong... I cannot force quit the game nor shut down my mac. what should I do???..
Currently I have took all of the CCs out from the mods folder. I also took the Electronic Arts folder out from the Documents.
I also checked the user diagnostics reports, but (i think) the things that pop up have nothing to do with Sims 4. I am sooo freaked out...... please help me
Sorry for the korean,, but its the same order even in english so..
Oops one more thing.. I tried to press 'repair game' in origin, but I can't press it.... I see the button but it doesn't allow me to press it. I think its because the game is still played..?
May 2018 - last edited May 2018
Yes, moving CC whilst having the game open wouldn't have been the best thing to do. Can you switch to Finder by holding down CMD and pressing the tab key and cycling through the open apps? If so choose Finder then click on the Apple in the menu bar and select Force Quit.
Once you've managed to quit the game, then quit Origin. Restart your Mac then launch Origin, right click on the game in your games library and select repair game. That should fix it
May 2018
OMG this finally worked!!! Thank you so much!!