Hi,
Thanks for you question. Sometimes RailClone needs a hand to know which splines belong together. You can do that by assigning splines that should be considered as a single plane the same material ID. Then in RailClone, change the
Hierarchy Checking mode to
By Material ID
I had some trouble with the splines in your scene file. They were crashing RailClone in this mode, and also crashed max when editing them. I've got around that by recreating them, but I'm not sure what the issue with them was.
All the best,
Paul