Try the following
- Close the game
- Rename Documents > Electronic Arts > The Sims 4 to Documents > Electronic Arts > The Sims 4_Old
- Repair the game
- Start the game. All your content will be gone now as the game created a new folder. All your saves/.. is still in the old folder so not to worry.
- Start a new save game
- Check if you still have the error
- Report back with your results for further steps on how to get your stuff back.
How do I get my saves and everything back after doing this?
Sorry, missed your answer. Always make sure to tag me if you answer back to one of my questions.
Follow instructions here, starting step 9: [GUIDE] Clean User Folder Approach | EA Forums - 12690428
