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Bluebellflora's avatar
Bluebellflora
Hero+
10 months ago

Unable to start: The Sims 4 is already running - Mac only

If you're experiencing this error message it doesn't mean your game is already running, the actual message itself is incorrect. It means The Sims 4 cannot access the Electronic Arts > The Sims 4 fold...
external drive
launching
8aewvl73edig's avatar
8aewvl73edig
2 years ago

Hello,

I just followed the tutorial on playing from a hard drive. My hardrive is formated to APFS and I have a macbook pro m1 with sonoma 14.1.1. Everything worked fine, my alias file is where it should and the game launched normally.

When I checked the enable mods box and tried to reopen the game it gave me an error "unable to start game data missing or damaged". I have tried to take my mods out one by one but the game still won't launch if I leave any mods there. 
Does anyone know how to fix this?

 
Bluebellflora's avatar
Bluebellflora
Hero+
2 years ago
@8aewvl73edig

Move out the Mods folder, trash the localthumbcache.package file then launch the game so a new one is created. Quit the game and re-download one of the Mods, don’t use an existing copy.

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