Problem solved for me by EA Support but you will not be able to recover the previously saved games. This worked for me and I am now able to save and play them again later. Here's what you do:
Repair game thru Origin, then check for updates thru Origin (right click on the game and those options come up on the list) make sure you are not running the game at all while doing this.
then go to Documents/Electronic Arts/The Sims 4/
Then go into the "cache" folder and delete all the cache files.
Then go to "Saves" folder and delete all the files.
Then go into the "scratch" folder within the "saves" folder and delete all the files which have the words "savegame" in it.
Then launch the game and create a new game and save it, exit the game, and go back in, the saved game should be there.
Hope this helps!
