this worked but it deleted all of my game files!!
@lmkola Your saves and other content aren't deleted, they're moved to where the game can't read them. The point of testing in a clean folder is to see whether the problem is something in the old folder you moved, or with your system. Now you know that the issue is in the user data folder.
You can copy the content from the old folder into the new Sims 4 folder in Documents\Electronic Arts now, but please do so in batches, and test each time to make sure the game still loads. If it doesn't, you'll know something in the last batch you moved is corrupt, and you'll need to split and test again until you find the problem file(s).
