When I had this with a different game, the problem was that the update created a new map instead of replacing the old one. Go to the place where you downloaded its files and check if that is the case. If it is, make sure to transfer any important files you created after installation (like screenshots and saves, although in this update that has become redundant) to the new map. Delete the old one or put it in a different map Itch won't check as a backup, and your game should work fine again. Tell me how it goes.