Same, Windows 10
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FATAL ERROR in
action number 1
of Create Event
for object room_generation:
Variable room_generation.background6(100242, -2147483648) not set before reading it.
at gml_Script_room_background_set
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stack frame is
gml_Script_room_background_set (line -1)
gml_Script_load_json_map
gml_Script_room_generate
gml_Script_room_create
gml_Object_room_generation_Create_0
Only happens when going to certain folders (Doors), but once this error is given save is unusable