Game will load up, then kick me out

I want to start this off by saying that I DO NOT have any mods installed. 

The game will load up fine, but once it gets to the main menu, it'll glitch, then kick me out. The Sims 4 will still be open. If I click it, it'll take me to the main menu, but do the weird glitch thing, and kick me out AGAIN, but the Sims 4 tab will still be open. So, it's unplayable.

I've tried repairing it. I've tried uninstalling and re-installing. I started completely fresh (aka removed all my old saves). Nothing is working. It worked fine before the update.

Please helpp