[CURRENT ISSUE 64-bit] Base game incompatible with expansion pack error

A few months ago I reinstalled Sims 3 on my new MacBook Air. It worked perfectly and later I also installed Studentlife. I keep getting the same error: 

'The game cannot be started. Your base game of The Sims 3 is not compatible with the current Sims 3 expansion pack. Update your game through the Launcher'

So I did, and reinstalled Origin, the base game, the expension pack, updated everything (including my Mac) and made sure I've had more than enough storage. After some googling I found a topic on installing a specific version by hand and I think I did that but it's still not working, I'm not sure I did it right but couldn't find a clear instruction for it.

Here some specifics of my Mac:

MacBook Air (Retina, 13-inch, 2020)

Processor: 1,2 GHz Quad-Core Intel Core i7

System (videokaart): Intel Iris Plus Graphics 1536 MB

Really hope someone knows what I can do!! Thank you.

@rosesmits  Please open Documents > Electronic Arts > The Sims 3 and delete the file labeled Version.tag.

@rosesmits  Just to make sure, please use Terminal to search for any extra copies of Version.tag.  Open Applications > Utilities, launch Terminal, and copy and paste this:

find / -name "Version.tag" 2>/dev/null

The reason I'm suggesting one of these files might still exist is that this particular error is almost always related to Version.tag.  So it's worth checking before going through the other, less relevant steps.

Okay I think I did find a Version.tag when I followed this steps. But when I look in finder for Electronic Arts I can't find it. When I look for 'Sims 3' I find the map 'The Sims 3 Packs' where I can navigate and found the other file that I deleted earlier. I can't find Version.tag in this file also. 

I added a screenshot of the result of Terminal (blurred my name haha). 

@rosesmits  The second entry listed, the one in Users/your username/etc., is the copy of Version.tag that's causing the issue.  The reason you don't see it may be that you're opening the iCloud version of Documents, not the one on your hard drive.  To do the latter, open a Finder window, click Macintosh HD (or whatever you've renamed your hard disk) in the left panel, then Users > your username > Documents etc.  If you don't see your hard disk listed, click Finder in the upper left corner of the screen, then Preferences > Sidebar, and check the box next to hard disks.

I believe the first entry refers to some backup data that Catalina makes (and maybe Big Sur as well), but it shouldn't affect Sims 3—the game doesn't read files in that location.  If instead, you happen to have some Sims 3 user data to an external drive that you've named "Data," please let me know.

Sims 3 64 Bit showing error: 

Unable to start game

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

My game is up to date and I don't need an expasion pack.. Please help.

@Sugarislove  Please open Documents > Electronic Arts > The Sims 3 and delete the file labeled Version.tag.

If that doesn't help, or you don't see the file, make sure you're in the local version of Documents, not the one in iCloud Drive.

I recently got a new laptop so I have reinstalled the sims 3 via origin, however when the game installed all the expansion packs seemed to be added on to the base game already and did not make me install and add on each separately. Im getting an error message when I launch the game so I think I may need to apply the fixes but the game icon is not showing in my applications folder on my mac? It shows on the launchpad so is there a way I can copy it across?

Hey @millieee44 what is the error message that you are seeing, the more info you share the better we can help.

Darko