By the far the most frustrating thing about the FM series is when you get really into a saved game and then suddenly your game stops working. This could be due to your saved game becoming corrupt. Unfortunately I know no way of solving this but if anyone does then feel free to post and I will add it to the OP. Your saved game is probably corrupt if it works fine but the game always crashes at certain date, no matter how many times you try. If your other saved games work fine then your saved game has probably become corrupt. You can prevent corrupt saves from being too disastrous by constantly backing up your game so you can reload to a point that's not too far back from the affected save.