I can't save the game, even when the game asks me to do so, before the graveyard mission, It still does not allow me to do so. If I use the Key Menu it makes the "wrong" sound and if I Use the mouse menu it does the same. How do I fix this?
What do you mean with "does not allow" you to do so? Does it give you an error and crash the game?Are you playing on PC or Joiplay?
