The error occurred shortly after I finished the first scenario.
296.001 Error MainLoop.cpp Exception at tick 11376: The scenario level caused a non-recoverable error.
Please report this error to the scenario author.
Error while running event level::on_gui_click (ID 1)
highlight-box needs either a bounding_box, source or target
stack traceback:
__core__/lualib/story.lua:520: in function 'recreate_entities'
...factorio/temp/currently-playing/transportbeltmadness.lua:221: in function 'map_save'
...factorio/temp/currently-playing/transportbeltmadness.lua:158: in function 'transport_belt_madness_start_level'
...factorio/temp/currently-playing/transportbeltmadness.lua:355: in function 'action'
__core__/lualib/story.lua:109: in function 'story_update'
/home/user/.factorio/temp/currently-playing/control.lua:99: in function </home/user/.factorio/temp/currently-playing/control.lua:98>
stack traceback:
[C]: in function 'create_entity'
__core__/lualib/story.lua:520: in function 'recreate_entities'
...factorio/temp/currently-playing/transportbeltmadness.lua:221: in function 'map_save'
...factorio/temp/currently-playing/transportbeltmadness.lua:158: in function 'transport_belt_madness_start_level'
...factorio/temp/currently-playing/transportbeltmadness.lua:355: in function 'action'
__core__/lualib/story.lua:109: in function 'story_update'
/home/user/.factorio/temp/currently-playing/control.lua:99: in function </home/user/.factorio/temp/currently-playing/control.lua:98>
I can attach a full log, if this is required. I have quite a number of mods installed, but this doesn't appear to be related to mods.
[0.18.15] Campaign transport belt madness exception
Re: [0.18.15] Campaign transport belt madness exception
Thanks for the report,
Its fixed for the next release
Its fixed for the next release