I didn't think the Settle and Carlisle route worked in Trainz 2010, I thought it was only built as an add-on pack for Trainz 2009.
As for the other Settle and Carlise route in Trainz Classics 3 UK Edition which was built previously, this was built as stand alone only, with regular updates from the Trainz classics UK website.
We are lost on what version you are trying to add into Trainz 2010, is it the origional Trainz Classics UK route or the add-on for Trainz 2009.
In Trainz 2010 you will see gold stars, click on this and you will see a whole host of other routes including Hawes Junction which is part of the Settle and Carlisle route, this was only the sneak peek in Trainz 2009 of the main route which was later introduced as Trainz Classics 3 - UK Edition - Settle and Carlisle.
Hope this helps
Joe Airtime