Everything is working again for me in Eastern Canada when I woke up this morning. Wife was happy it was broken last night, forced me to go to bed earlier. :)
Have you tried "JR US track (pro) #4-132 (narrow ballast)" <kuid2:523:19723987>? It's a built-in which I've been using recently and works very well with PBR textures.
I'm having an issue editing HD terrain when there are digholes on the route. The edits do eventually take but reaction is very slow, to the point of the cursor heavily stuttering along the terrain or freezing up briefly). It makes editing an HD route pretty much impossible. I have tried with...