Try resetting your user files as described in the factory reset described in this post: http://answers.ea.com/t5/The-Sims-4/FAQ-Troubleshooting-Steps-amp-Known-Issues/m-p/3621199
You won't loose anything. Just make sure to not delete any files and make a backup.
After renaming, repair your game by right clicking on the game in Origin.
Try on a new game with nothing added back first (start new game). If it works, put back your save game and try again. If it still works, you can start putting stuff back.
The rest does not need putting back, cause they are mostly cache files that recreate or log files that are not needed for the game.
The game was fine after I started a new save file. I added back the backup saves and opened a save file. After several minutes it did load. I think the update messed up one save file. I have two main profiles that I play with and a few others. I will check them to see if it is just the one profile that won't load.
No, I rarely use mods. I haven't had any mods installed for months. I knew the patch was coming yesterday. I think the issue is affecting one household which sucks because it's the household I play with the most.
