0.10.12 Win10 game crash

All of the sudden, this happened upon entering The Barrens with Realm Instability 5:


############################################################################################
ERROR in
action number 1
of Create Event
for object obj_Control:

Unable to find any instance for object index ‘70’ name ‘obj_player’############################################################################################
gml_Script_scr_RandomWalkGen (line 1228)
gml_Object_obj_Control_Create_0 (line 405)
gml_Script_instance_create (line 7)
gml_Room_realm_Create (line 54)

No idea why this happened this time, usually it worked fine.