I'm not using the itch.io app, I have a folder on my desktop. There is a screenshot and there is no tempsave.sav. It started in episode 3 but I havye savegames from episode 4 and 5 where the bug is reproducable (at least for me). Just load a corrupted save files (this works) and then save again (quick or normal) and then it crashes after saving.
sounds tricky - so the saving seems to work and a corrupted value could be causing a crash?
still it doesn't make sense why there is no error popup of any kind on crash 🤔
(I guess if it's truly corrupted save I will be able to reproduce it, but just in case:
so if you start a new game on episode 3 with the level select and save the game then it works ok?)