If you see this error:
Please open Documents > Electronic Arts > The Sims 3 and delete Version.tag. You'll need to open the folders manually; the file won't show up in a search.
If this doesn't help, please move your entire Sims 3 folder out of Documents > Electronic Arts and onto your desktop, then try to launch the game again.
@Stylikpaylinoran You're totally fine posting here. Are you having exactly the same error? There are quite a few floating around.
If you have iCloud Drive enabled, it's possible you're looking in the wrong place for the Sims 3 folder, i.e. in iCloud's version of Documents rather than the local one. To get to the local version, open a Finder window, click Macintosh HD (or whatever you've renamed your hard disk) in the left panel, then Users > your username > Documents. If you don't see your hard disk listed, click Finder in the upper left corner of your screen, then Preferences > Sidebar, and check the box next to hard disks.
@Stylikpaylinoran You can use Terminal to search for the file, just in case it's hiding somewhere. Open Applications > Utilities, launch Terminal, and copy and paste this exact line:
find / -name "Version.tag" 2>/dev/null
The command will take a while to finish running, so give it a minute or so even if it's not immediately spitting out results. You'll know it's done when you see the command prompt again. If Terminal does find any copies of the file, please post the full file path here. You can write [username] instead of your actual username, but leave the rest of the file path intact.
If there aren't any copies of Version.tag, then clearly it's not causing the error. In that case, please repair the game in Origin: open your game library, right-click (or hold crtl and click) on the Sims 3 icon, and select Repair. If that doesn't help, please let me know what packs, if any, you've installed, and whether you ever had the 32-bit version of Sims 3 installed on this computer.
@Stylikpaylinoran I'm guessing you're opening the iCloud version of Documents, and that version doesn't have the Sims 3 folder. If you don't mind disabling iCloud, please do so, then manually open Documents > Electronic Arts > The Sims 3.
The other option is to go the long way around. Open a Finder window and click on Macintosh HD, or whatever you've renamed your hard disk, in the left panel. (If you don't see it listed, click Finder in the upper left corner of your screen, then Preferences > Sidebar, and check the box next to hard disks.) From there, open Users > your username > Documents > Electronic Arts > The Sims 3, and then delete Version.tag. This is exactly where Terminal says the file should be.
Once you've deleted the file, please try to play, and let me know whether it works.
@Stylikpaylinoran In the same way you deleted Version.tag, please find and remove the entire Sims 3 folder that the file was in. You can just drag and drop it to your desktop, or dump it in Downloads if you already have some files on your desktop. Then let me know whether the game works.
If it doesn't, please at least disable iCloud's automatic syncing of Documents, if it's not already disabled. This guide is for a different issue, but the relevant settings are the same:
https://bluebellflora.com/2017/02/06/sims-3-and-sims-4-not-loading-save-games/
@Stylikpaylinoran Of course, please come back with whatever questions you have.
