From Bittrex "This market is being removed on Friday January 27th, 2017." about NTRN.
It has been a battle to stay on Bittrex for months, Right now I want to focus on getting the code work and network all buttoned up nice.
NTRN is trade-able at Cryptopia and Yobit.
Once the new clients are out, and the fork has been completed and everything is running as It should, I will focus on securing new positions with the exchanges.
Sorry to see you've lost the battle eventually. Good luck with the new client!