I know this is probably obvious and has already been done for those having problems, but have you tried repairing the game? Sometimes I've had to do that with updates before anything new added or fixed will work, especially in old save games. Brand new save games after an update usually work fine with the new features. But not always. At least for me. Worth a try I guess if you haven't. *shrugs*
Good luck I hope the problem is resolved soon for you!
Steps to repair your game:
1. Log in to Origin while online
2. Right click on the image of your TS4 game from your Origin library
3. Click on 'Repair'
4. After the repair is complete, launch your game
The next steps I don't think are really necessary unless you like to play offline like I do:
5. After the game fully loads, exit the game
6. Exit Origin
7. Log in to Origin again, click go offline
8. Launch TS4 again, play
EDIT: Okay, I see you posted about deciding to try repairing the game while I was typing this. Oops! Anyway, hope it works!