I removed all the guests, but the game started crashing sooner, at only about 350 guests. I tried to continue playing on it after I posted my problem, saving as often as possible, and unfortunately saved right before the game crashed. Now, whenever I open the file, the game runs for about 1 second before it crashes. It wouldn't even display an error message or anything, the game would just instantly close. I did realize I was running the game on a previous release and updated it after the 1 second crashes started happening. Now, rather than the game instantly closing on that save, it hangs.