This patch fixes various major bugs that I accidentally introduced in the last patch. Primarily, it fixes a major issue with the new save system that resulted in game data persisting when loading, causing pollution of earlier game states with anachronistic quest data.

I apologise if this has bricked your playthrough, but hopefully the issue is resolved on any fresh playthrough, or any playthroughs where you didn't load a save mid-session (loading from the main menu after starting the game should have been fine).