When I look at the old I.O.W Network route I get a Graphics that in not normally visible in the editor but comes and goes every few seconds I have tried renaming each of the routes asset folder to try and make it not appear but not getting anywhere. I seem to remember this from UKTS days but the answer is lost to time Gary Padley - do you remember this? Peter
The only thing that comes to my mind is that this might be related to weather/sky dome. Have you tried to change that?
I don't think it was that. But I did find in \Assets\RSDL\IslandLine\Scenery\Railwaymen some files called Railwayman50sxxxx and remembered a problem with the old Woodhead route so I renamed the folder to RailwaymenX so the game ignored them and that has seemed to work. Peter
It makes sense if they are animated, since animations are stopped in the editor. So this sounds like an animation issue.