balthazariv, it comes down to a ":" vs a "." line 6 of the fertiliser/init.lua farming:generate_tree(pos, def[4][1], def[4][2], def[4][3], def[4][4]) change it to farming.generate_tree(pos, def[4][1], def[4][2], def[4][3], def[4][4]) and it works. Do that and it will no longer w...