bdy26 wrote:They aren't errors I recognise - something odd there. I would verify integrity of game cache to fix it.
"Consist builder can't load vehicle" is one I have seen before. It means what it says on the tin, that the required vehicle/s are missing or cannot be loaded for some other reason.
The only "other reason" I can think of is the assets being locked by the Steam/RS.com anti-piracy filter, which is why I ask where the OP obtained their copy from.