Update 23/10/19 – EA have today released a patch to fix these Catalina issues – 126.96.36.1990. Make sure your game is up to date.
It’s patch day! And the BEST update is finally a working game in macOS Catalina – rejoice! This isn’t really much of a surprise given the announcement that 10.7 Lion users must not update their game to this patch if they want to carry on playing. It seems that making the game Catalina compatible breaks it for Lion users, something to do with the ActivationUI file and Lion’s need for it to be in the game files. It’s a shame but Lion is 8 years old now so time to upgrade if you can. If your Mac is stuck at 10.7 Lion then unfortunately it does not meet the minimum hardware requirements for the game as it will be around 10 years old at least.
There are a couple of issues that have cropped up:
Error message – Unable to start: The Sims 4 is already running
- Move your Sims 4 folder to the desktop (this resets it back to default settings but all your data is safe in the folder you moved)
- Launch the game to the main menu then quit
- Open the Sims 4 folder you moved to the desktop then the saves folder. Select all your saves and drag them into the newly created saves folder in Documents > Electronic Arts > The Sims 4
- Do the same for the Tray, Mods and Screenshots folders
Game very laggy/game freezing and cursor beach balling (fixed in Origin patch 11/10/19)
- Click on the game in your Games Library in Origin
- Click on the little cog under the Play button for Settings
- Click on Game Properties and uncheck the box for Enable Origin In Game for The Sims 4
If you are running Lion and have inadvertently updated your game you will need to update it via the Mac App Store. 10.14 Mojave is the current OS level but any version available to you from 10.8 Mountain Lion onwards will work. 10.15 Catalina will be available to all this month as a download from the Mac App Store.