Crash at battle startup

If your game crashes, please copy and paste the full error message below, or post a screenshot of it.


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

DoSet :2: Malformed variable
at gml_Script_bc_StartupEffects
############################################################################################

stack frame is
gml_Script_bc_StartupEffects (line 0)
gml_Object_obj_battlecontroller_Step_0

Please describe in as much detail as possible how to reproduce the bug or crash.

I just walked into an ordinary battle (Nether Realm) and got a crash immediately. Screenshot of the two parties attached, in case that helps at all.

What operating system are you playing the game on?

Windows 10

What game version are you playing?

2.1.6