Crashing Every Battle With Nostalgia

EDIT: This also happened without Nostalgia, but happened every time with it.


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

Push :: Execution Error - Variable Index [0,4] out of range [1,4] - -7.list(100001,4)
at gml_Script_bc_StartupEffects
############################################################################################

stack frame is
gml_Script_bc_StartupEffects (line 0)
gml_Object_obj_battlecontroller_Step_0