Does anybody know in the network editor what a neon pink triangle node means, other than it'll crash the editor if I try to delete it or connect it to anything? DTG guys? Anybody at all? DTG Alex DTG Matt edit: I worked my way to a solution, so I guess this is resolved. It seemed to have something to do with some track sections that were weirdly overlapping... sort of? I just randomly deleted nearby bits of ribbon until I got lucky and saw a few red nodes, as opposed to having the editor crash. Also, there was also a bit of orphaned track proxy mesh that I couldn't get any of the ribbons to admit to owning, but that became selectable again somehow when I started connecting red nodes back up, so I got that deleted. All very odd, but I think I've got things to a state where I can leave it alone for a while.
Select all the sections connected to it and delete and a bit further out as well, its a junction issue.
just saw your reply after I worked it out myself by trial and error, but I really appreciate the help; that's what did it in the end!