A Stainless Steel wagon with doubled capacity.
Mods introducing new content into the game.
Transportation of the player, be it vehicles or teleporters.
Got the following error message after updating to 0.18.18: https://www.dropbox.com/s/lk8j3qbyv4ighp1/stainless%20steel%20wagon%20error.jpg?dl=0. Appears to be related to the opening / closing sound (which is, perhaps intentionally, REALLY loud).
FYI
delete these 2 lines from Entities.lua wagon.open_sound.volume = 1.5 wagon.close_sound.volume = 1.5
it will work again.
Thanks for the fix.