Just had the following error message, during the tutorial on delivering the first cargo to Khouzoup IV:
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ERROR in
action number 1
of Draw Event
for object con_tutorial:
global variable name 'nextobjectiveplanet' index (103274) not set before reading it.
at gml_Object_con_tutorial_Draw_0
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gml_Object_con_tutorial_Draw_0 (line -1)
Addendum: it happened again