I was in this room with the submarine and shot the bottom fish and got the following error. I’m using Version 10 of the game. I was only able to reproduce it once after several attempts and it seems like it only happens when I collide with the fish at same exact moment as the fish is hit by my torpedo.
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ERROR in
action number 1
of Step Event0
for object obj_ship:
Pop :: Execution Error - Variable set failed x - read only variable?
at gml_Object_obj_ship_Step_0
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gml_Object_obj_ship_Step_0 (line -1)