Another Combat Crash

right after the wolpertinger crashed me, another crash soon after. Fortress got one of the new Chaos gems (not sure name) that ended up doing 50% damage to adjacent enemies that had both chance to use no mana and cast on defend if I recall correctly. As soon as I defended the fortress the game crashed.

win 7

version 2.0.0


############################################################################################
FATAL ERROR in
action number 1
of Step Event0
for object obj_battlecontroller:

Push :: Execution Error - Variable Index [0,3] out of range [1,2] - -7.targets(100002,3)
at gml_Script_bc_CreatureCast
############################################################################################

stack frame is
gml_Script_bc_CreatureCast (line 0)
gml_Script_bc_CreatureCastSpellGem
gml_Script_bc_SpellsOnHit
gml_Script_bc_OnDefend
gml_Script_bc_CreatureDefend
gml_Script_bc_Turn
gml_Object_obj_battlecontroller_Step_0