factorio-current.log here: https://pastebin.com/UZV7MNbD
I have a 1-2-1 train that has a somewhat complicated schedule on it so that I can use it to shuttle myself around to the various major locations I've laid rail to on the map, but it doesn't matter if I turn the train to manual mode or not, when I deconstruct or add a locomotive to the train (trying to make it a 2-0-2), the game crashes to desktop. The error log says it might be related to a bug from 2022, but that's about "restarting" a map and I've never done that with this save file so I don't think it's related, anyways they say they fixed that bug long ago.
Not sure entirely what's going on here, to be honest, I don't seem to have this issue with any other trains in my save file.
