I am unaware if this has been pointed out before, but I noticed a bug with the Berserk staff and its affect on friendlies. In Chapters 14 and 16, if an ally afflicted with berserk targeted another controllable (blue) unit, the game would crash. Luckily, I managed to make it through Chapter 14 with the use of save states, but I have yet to get through Chapter 16 without encountering this bug.