130.574 Error MainLoop.cpp:1207: Exception at tick 3312859: Die Mod Moon Logic (0.0.16) hat einen Fehler verursacht, der nicht behoben werden kann.
Bitte informiere den Autor der Mod über diesen Fehler.

Error while running event Moon_Logic::on_gui_opened (ID 84)
Moon_Logic/gui.lua:230: table index is nil
stack traceback:
Moon_Logic/gui.lua:230: in function 'close'
Moon_Logic/gui.lua:219: in function 'open'
Moon_Logic/control.lua:516: in function <Moon_Logic/control.lua:505>

I loaded a save file and clicked on a mlc-entity

Not entirely sure why it didn't happen to me as well, seem to be a bad earlier fix in 0.0.14 for a bug added in 0.0.12. Added chain-fix in 0.0.17.
As I was mostly editing the mod lately, and not really playing with it myself, it's nice that it has at least one actual player to test it. Thanks! :)