When your team fights the 8 liches (i.e., you fight yourself), the game freezes up after four of the opponents move. This happened two times out of two using firefox 3.6.8, shockwave flash 10.1 r82. There is also a separate minor error where it says there will be 6 enemies and there are only 4.
Report of possible bug:
L7 Drow Shaman keeps casting magic missile but that isn't in the spell list. Never casts bomb or etherwind: perhaps one of these two is being rendered "magic missile" by mistake.