I've replicated it now. I'm in Moravia. When a Whip Master whips a Hell Hound to attack, and that attack kills the last member of my party, the game freezes. Anyone else ever experienced this? I've done it twice now.
I remember having similar problems with that enemy formation while using a small party. I guess something goes out of order with the attack pattern of the Whip Master in combination of few party members alive.