I always have last exceptions in my sims 4 folder, usually 2 or 3. I make sure to delete them before restarting my game. Is this the same for everyone? I am a totally vanilla player.
Thank you for your comments. EA_Mai explained last exceptions very well. Thankfully, I have no game play problems at all. I did notice that I only get them whenever I visited festivals or I have to reset a sim. I do not worry about them any more :)