HAHAHA, what a difference a day makes. I went ahead and dumped the track into Scene3 and just built it to see what would happen. The CTD is there as allways, but it does run.
I think there is another issue with this segmenting of the track.
I'm thinking now that I might just open a new copy of the original Interlagos, delete the scenes, and start inporting objects from the one i'm using.
It may take some time, but I dont like the ground segments i'm using anyway, so it could use a hole new ground area. We'll see.
If only I could figure out this CTD. without it, its releasable as is.
The campaign continues.