Load Error Code 800/801

Unfortunately, I have already tried each of these solutions. I use mods that are regularly updated, but I also tried playing without any mods, and the problem persisted. Placing lots from the map view is not possible, as it leads to an infinite loading screen. Even when I create a new save file, the error eventually returns.

EXC_BAD_ACCESS (SIGSEGV), KERN_INVALID_ADDRESS, on Thread 21, sounds like you have got an outdated script mod, in your mod folder.  Check that all your mods are updated and you have the latest version of MCCC, if you do use that.  Thou you said you where playing without mods, if that is the case then your save game file is corrupted.  You can check to see if this works, on your map screen go to the library and pick a lot from your tray and on the full picture of the lot click on the button that says place lot and edit, place that lot over the corrupted lot that give you the endless loading and see if the lot will load when you do this. 

I'm experiencing this issue on a MacBook Air M1 (Apple Silicon), running macOS 27.2 and The Sims 4 version 1.129.39.1230 (ARM64).

When I try to load a residential lot, I receive Error Code 801. Sometimes the error message does not appear, but the game gets stuck on an endless loading screen. The loading tips keep changing and the music continues playing, but the lot never loads.

The issue occurs across multiple save files. The game also crashes when using CAS. Switching to windowed mode does not help.

I have already tried repairing and reinstalling the game, creating a clean user folder, clearing cache files and testing without mods. None of these steps resolved the issue.

My game files are stored locally, and the symbolic link to the local Sims 4 folder has been verified as correct.

I also have a crash report showing EXC_BAD_ACCESS (SIGSEGV), KERN_INVALID_ADDRESS, on Thread 21, with the stack involving libpython370.dylib and Simulation.dylib.

Please investigate whether this issue affects Apple Silicon Macs specifically. I would really appreciate a fix, as the game has become very difficult to play.

Having the exact same issues, I can barely play the game! The moment I see the properties being 500 simoleons I know it’s game over! 

Have done everything possible suggested and still hasn’t fixed anything!! 

Having the same issue right now :(

I have tried literally everything and nothing is working. My only hope is that is fixes itself with the next update. I already lost all of my old save files a few years ago to a similar issue and I'm done with this game if it doesn't get fixed asap. So much wasted time and effort, not to mention, money!

My game is unplayable, I've logged thousands of hours and spent so much money on these expansion packs and I can't play it, with this thread being up for 2 years and no fix.

I don't have any mods. I've tried recovering individual saves, repairing the game, deleting everything & recreating it. Deleting the localthumbcache. I still end up with error 801. 

I’m having the same issue. I’ve run through everything on troubleshooting and it’s still not working. 

Hey 5f240e6d57608557​, 

I've merged your thread into the current report open for this topic. Please check out the first post for some troubleshooting suggestions. Thanks! 

I keep getting error 801. Every time I think I fix it, it happens again shortly after. I've tried repairing, uninstall then reinstalling, deleted all recommended files. I had to completely wipe everything and start from brand new, and it still only worked for a short time before I tried to move the household into a new house and the error persisted. I can't play the game with this error, it either doesn't let me load (shows the error) or all the lots disappear if they ever do load, nothing works properly. Super frustrated with having tried all the recommended steps and nothing is working. Also, can't figure out how to contact EA about this or if that's even possible. :(

hi so my game has been unusable due to an error pop up. i can open the game but not build mode or a household. ive done some research and heard it had to do with mods, so i cleared the mods folder and the problem persisted. im not particularly attached to my save file, how would i go about clearing this issue and starting completely fresh? i'm just concerned about losing my packs :( ty!