Hey! Im getting this error when i place down a locomotive MK.II from bob's logistics mod on the rails on the latest patch and version of the mod

Error while running event modular-trains::on_built_entity (ID 6)
modular-trains/scripts/locomotive_type.lua:70: attempt to concatenate local 'chassis_morpheme' (a nil value)
stack traceback:
modular-trains/scripts/locomotive_type.lua:70: in function <modular-trains/scripts/locomotive_type.lua:64>
(...tail calls...)
modular-trains/control.lua:42: in function 'switch_locomotive_type'
modular-trains/control.lua:98: in function <modular-trains/control.lua:93>

Thanks for the report. I will take a look. I may simply change it so that this mod ignores Bob's locomotives, because Bob's improved locomotives make the equipment system unimportant for gameplay.

It also happens with the armored locomotive from https://mods.factorio.com/mod/Armored-train and the maglev locomotive from https://mods.factorio.com/mod/se-space-trains

I made a fix so that this mod ignores all unsupported trains. Some of the other mods are not balanced appropriately for this mod. I can try to rebalance other mods if there is interest.