I've done all troubleshooting, just tried this fix and they now appear: Sims 4 New Update New Items | EA Forums - 11873298
It's going to documents>Electronic Arts and deleting content folder then go into game and it prompts that an update is happening and then you are told you need to restart game, this fixed for me
Thank you for this! This seemed to fix it once, but when I went back into the game a second time I got the same error. I really hope I don't need to delete the Content folder every time I want to play this Sims now ...
