Sims 3 64 Bit Launch Error: 'the sims 3 quit unexpectedly'

@ad1991  If the base game works, great, let me know how it goes adding one pack at a time.  If and when you do run into other issues, try repairing the game in Origin: open your game library, right-click on the Sims 3 icon, and select Repair.

If the base game alone doesn't work, try uninstalling it and reinstalling into a new admin user account on your Mac.  Use only letters and numbers, no special characters or accents, in the username.

So I’ve set up a new admin account on my Mac, downloaded the base game again and now when the launcher starts it just goes back to origin...

This is infuriating! 

Any advice @puzzlezaddict @MaxisJoe ?

@MaxisJoe So I DO get into the launcher, but when I press play in the launcher, it takes me back to Origin.

I ran that command and got this...

2020-10-30 21:24:38.678485+0000 0x9046     Default     0x0                  1924   0    The Sims 3 Launcher: S3L - FirstRun is TRUE

2020-10-30 21:25:22.164815+0000 0x953d     Default     0x0                  1945   0    The Sims 3 Launcher: S3L - Game Version:

2020-10-30 21:25:22.164845+0000 0x953d     Default     0x0                  1945   0    The Sims 3 Launcher: S3L - 1.70.292.024017

2020-10-30 21:25:22.164856+0000 0x953d     Default     0x0                  1945   0    The Sims 3 Launcher: S3L - mSecureServerAddress:

2020-10-30 21:25:22.164867+0000 0x953d     Default     0x0                  1945   0    The Sims 3 Launcher: S3L - https://launcherapi.thesims3.com:443/axis2/services/Sims3UploadDownloadServic

This same problem is happening to me. I wanted to update and redownload origin because my sims 3 was no longer letting me download custom content. so I updated everything, and my launcher comes up, but then I get this message.

Unable to start the game

Your The Sims 3 Base Game is incompatible with the current Sims 3 Expansion Pack. Please update your game via the game launcher.  

@JaneRick17  Please go into Documents > Electronic Arts > The Sims 3 and delete the file labeled Version.tag.

@MaxisJoe  Here are my Mac specs:

Operating System: macOS Big Sur 11.0.1 Beta (20B5012d)

Mac Model: MacBook Pro (13-inch, 2020, Two Thunderbolt 3 ports)

Processor: 1.4 GHz Quad-Core Intel Core i5
Memory: 8 GB 2133 MHz LPDDR3

Graphics: Intel Iris Plus Graphics 645 1536 MB

Don't have any anti virus stuff running and currently just trying to add the base game, will tackle EP's once I can load it!

Let me know if I can provide any other info.

@MaxisJoe  @puzzlezaddict I am having a similar problem except I am on macOS Catalina. I have tried just downloading base game and each of my pack individually and nothing has worked so far. I am able into live mode because it shuts down and returns to Origin within the first minute. I can use CAS no problem. I am horrible with computers and have no idea how to access my specs. I have tried re-downloading and repairing multiple times. I have received the fix and have the CD key.

@KelliDever I'm having the same exact issue. My Mac has the right specs so I'm thinking that's not where the issue is coming from...? Anyways, I noticed I don't have the "the sims 3" folder in my EA folder despise having downloaded it from origin and having entitlement and CD key etc etc. Do YOU have TS3 folder? I'm just trying to figure out if that's where the issue is coming. 

To clarify: It's not a hidden folder/file either. It's just not anywhere in my computer.