16.219 Error ModManager.cpp:1514: Failed to load mod "NonWaveDefense2": NonWaveDefense2/non_wave_defense.lua:767: attempt to index global 'game' (a nil value)
stack traceback:
NonWaveDefense2/non_wave_defense.lua:767: in function 'print'

This happens during factorio start up. Disabling the mod makes it work.

I think this happens because this module overrides the global print function, so whenever any othe rmodule tries to print anything, the game will crash.

function print(message)
game.players["Lunzir"].print(tostring(message))
end

It will likely also crash when there is no player called Lunzir. I think this code should simply not exist.

Sorry it took so long to respond. I'll update with that line/function removed (it should never execute in the mod itself, so that might be a legitimate bug).

Uploaded a new version. If there are any problems, please post.