in 0.20 an exception is thrown in battle when the last kill in the combat before was done by a minion. it's not a hard crash but can be mitigated with "ignore" twice
[..]
File "game/myscripts/battle engine/battle/battle.rpy", line 284, in <module>
text "What will {0} do?".format(currentplayer.name) outlines[ (absolute(10), "#000", absolute(2), absolute(2)) ]
AttributeError: 'NoneType' object has no attribute 'name'</module>not exactly sure about the root cause, maybe the battle end does not (re)set the variables/classes correctly when the final kill was not done by MC or Asara
if you need it I can post the whole trace or prepare a save game