Re: Latest update won't let me play.

@Riverleigh  Try clearing the Desktop App's cache:

https://help.ea.com/en/help/faq/clear-cache-to-fix-problems-with-your-games/

If that doesn't help, try launching the game through Origin.  If you can't, repair it instead: open your Origin game library, right-click on the Sims 4 icon, and select Repair.  The Desktop App doesn't have this function yet.