Manually uninstalling an Expansion or Stuff Pack in the Sims 3 for Mac

Sometimes it is necessary to uninstall an Expansion/Stuff Pack manually, mainly because the Sims 3 uninstaller has disappeared from your Mac or is corrupted. If you are suffering from the disc authorization error then uninstalling your latest EP/SP and downloading the digital version should fix it. If you are looking to completely uninstall the whole game and reinstall it, please read my in depth guide here.

For the sake of this guide I am using Seasons as an example. Seasons is Expansion Pack number 8 in the Sims 3 series and shows up as EP08 in the game files and folders. At the end of this guide I have listed all the EPs and SPs and their corresponding numbers.

Using the Uninstaller

  1. Always try and uninstall using the uninstaller first. The uninstaller is in Applications > The Sims 3. When you open the Uninstaller you will be prompted to choose which EP/SP you want to uninstall: Uninstaller Select whichever one you want to uninstall and click Continue. You will then be prompted by OS X to enter your password. Your Mac user account must be an administration account to authorise this: Permission Enter your details and click Ok. You will then be advised by the Uninstaller about authorising and de-authorising games, click Ok to continue: Deauthorization Let the installer do it’s stuff and close any open windows when it has finished.
  2. Now you must delete the residual file that the uninstaller has left behind. Make sure you are in Finder and click Go in the menu bar. How down the Alt/Option key and click on the Library folder that appears in the drop down menu:
  3. In the Library folder that appears open the Caches folder and drag the folder named com.transgaming.thesims3ep08 to the Trash. Obviously the ep08 at the end will be different depending on what EP/SP you are uninstalling. You should now have deleted all traces of the EP/SP.

Manually uninstalling an Expansion/Stuff Pack

  1. Go into Applications > The Sims 3 and drag the EP/SP you want to uninstall to the Trash (including the Readme.txt file). Don’t forget to trash any shortcuts you have created too, including ones on the Desktop or in the Dock.
  2. Follow step 2 above at opening the hidden Library folder. Once you have opened it navigate to the following locations and trash the files/folders in red:
    • Library > Preferences > The Sims 3 Preferences
    • Library > Caches > com.transgaming.thesims3ep08 (or whatever corresponding number EP/SP you are uninstalling)
    • Library > Cookies > all files starting with com.transgaming
  3. Go back into Applications > The Sims 3, right click on The Sims 3 game icon and click on Show Package Contents. Navigate to Contents > Resources > AddOns and drag the EP/SP you want to uninstall to the Trash.
  4. Empty your Trash.
  5. Launch the game from The Sims 3 base game app in your Applications > The Sims 3 folder. You can check that the EP/SP has properly uninstalled because it will no longer be showing in the Launcher, it will be greyed out.

List of Expansion and Stuff Packs with corresponding numbers:

  • World Adventures (EP01)
  • High End Loft (SP01)
  • Ambitions (EP02)
  • Fast Lane (SP02)
  • Late Night (EP03)
  • Outdoor Living (SP03)
  • Generations (EP04)
  • Town Life (SP04)
  • Pets (EP05)
  • Master Suite (SP05)
  • Showtime (EP06)
  • Sweet Treats (SP06)
  • Diesel (SP07)
  • Supernatural (EP07)
  • Seasons (EP08)
  • 70’s, 80’s & 90’s (SP08)
  • University Life (EP09)
  • Island Paradise (EP10)
  • Movie Stuff (SP09)
  • Into the Future (EP11)
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21 thoughts on “Manually uninstalling an Expansion or Stuff Pack in the Sims 3 for Mac

  1. I just installed Late Night and ever since, it has not been working. I can’t open the launcher because I get the “unknown error occurred” message and when i go to the uninstaller to uninstall it, it says my uninstaller has been damaged or is incomplete. The problem is I can’t uninstall it manually because it isn’t even showing up in my sims 3 folder…. like it never downloaded or something. I don’t want to have to uninstall everything again… this will be the third time and the second time uninstalling and reinstalling origin…. I’m almost ready to ask for a refund…

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      1. Yes. I contacted customer support today as well and they gave me a different version of origin to download. If that doesn’t work I am just going to ask for a refund. Your posts are super helpful btw!!

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        1. @Alicia – I’m having the same problem!! I switched over to the new MacBook which runs on OS Sierra and I installed everything all at once so I couldn’t figure out what was causing the unknown error, but now that you mentioned Late Night, I just noticed that mine isn’t showing up like it wasn’t downloaded either. What version of origin did they tell you to install?? Did it work?? I might try that if yours works!!

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    1. Go to (https//:answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-Sims-3-Unknown-Error-in-El-Capitan-Sierra-High/m-p/5794065#M6381). Remove the parentheses, of course! It’s a bit of a pain, but it really worked for me, I was having the same problem!

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  2. I contacted EA and told them what was going on. Everything else is working fine, just late night is not, so they credited me so that i could download a different pack.

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  3. I uninstalled Late Night through the SIms 3 uninstaller, but i cant find the transgaming03 files to also delete…. someone please help

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  4. So, I’ve been a little stupid and deleted the actually game without deleting the package contents or using the uninstaller and now origin is claiming there is a download in process – forever 😦 – and I can’t fix it. It’s a nightmare…

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      1. So I have done this and it is still convinced the actual game is installed (not the expansion packs) and so it will download expansion packs but it will remain unplayable. Where do I find the package contents of the game after I’ve deleted it? This is the only step I’m missing and even Origin hasn’t fixed this. Maybe I may also need to run the manual installer but I’ve forgotten where to locate it, so…

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  5. Now what if I only want to manually uninstall only one expansion pack, if I delete those red folders is that going to affect the other expansion packs?

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  6. whenever I have tried to open the uninstaller, it says “You can’t open the application “The Sims 3 Uninstaller” because it may be damaged or incomplete.” and I dont know what to do because I have tried uninstaller high end loft stuff manually but i cant find the transgaming file for it.

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  7. I need help I can’t find the ep number file. All I have is one of my ep into the future and I don’t want to uninstall that I’m trying to uninstall island paradise. HELP

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