sims 4 can't run save files?

@PolishBelgian  Do you have OneDrive set to automatically sync the contents of Documents with cloud storage?  If so, please disable  that function, or disable OneDrive entirely and test.  If that doesn't help, move the entire Electronic Arts folder out of Documents, launch the game, create a new save, look around to make sure it's working, save, quit, and try to reload.  If it works, you can move your existing saves and other content from your old Sims 4 folder inside the Electronic Arts folder to your new one.

If that doesn't help either, please disable your antivirus/firewall, just long enough to test.  If that's the issue, you can set exceptions for Origin.exe and TS4_x64.exe.

@puzzlezaddict Hey, so I tried everything you suggested to me. I turned off OneDrive, it wasn't even on in the first place. I also turned off my antivirus, still doesn't work but still i've put TS4_x64.exe and Origin.exe into the exceptions, that didn't help either. I let my game creat a new Electronic Arts folder and everything was fine, until i put my save folder back in. A few minutes ago I tried the Legacy Edition and it worked fine but I still got a pop-up that I had to run the 64-bit version because the game might be unstable. So right now i'm reinstalling the game and I hope that works! Thanks for all the help though!

@PolishBelgian  I hope the reinstall fixes the problem.  But if it doesn't, please run a dxdiag and attach it to a post.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/

@puzzlezaddict Hey, just did the reinstall and everything seems to work fine now! Made some new saves opened my game about 5 times and it worked each time. So I think the problem is solved now! Thanks again for the help!