Sorted it the route wanted a train called [ONE_class156] My class 156 was calles [cl156].
I made a copy of [cl156] and called it [ONE_class156] so they all work now!![]()
There are easy ways to get around this problem - for instance, just install a new train somewhere other than the BVE 4 train directory first, then change train folder names as needed, and finally move the new train where it's supposed to go - and if you're worried about an accidental overwrite, maintain a backup of your BVE files. That's a really good idea anyway.I may not for example want the RailNetwork 170 to replace the one I already have