Problem with modeling/exporting track lofts [TS2015]

A friend and I have followed the instructions in the developer documents (http://railworksamerica.com/download-library/accessories?view=document&id=1081:rsc-s-developer-docs&catid=24:accessories) and our tracks always end up looking something like this.
-Using 3DS 2013 64x
-Origin is at 0,0,0
-Using the RW 3DS material with proper image formats

Are these documents effectively out of date? If so what is the new process?
-Using 3DS 2013 64x
-Origin is at 0,0,0
-Using the RW 3DS material with proper image formats

Are these documents effectively out of date? If so what is the new process?