Why does this save have a blank "Air Simulation Mode"?
It's happening on TPT Version 95.0.345 for Windows 10.
On the latest version of jacob1's mod, the "Air Simulation Mode" for that save is just "On".
it may be because of the save being old at the time when there was just no air simulation and there might have been a glitch when new air simulation rules were added. i didn't have TPT at that time so i don't know i might be entirly wrong