Velocity: Adding Nightwatch breaks Mocha?

I’m trying but failing to get Mocha and Nightwatch to co-exist under Velocity.
Simple test:

…app comes up and Velocity shows Moha loaded OK with 1 example test.

  • Stop meteor
  • meteor add velocity:nightwatch-framework
  • Start meteor

…app comes up but shows Mocha hanging in “Loading…” and Nghtwatch has an “Add Nightwatch sample tests” button nothing seems to happen when clicked.

What am I missing…???

(Server output wih debug enabled is here just in case: http://pastebin.com/6qJYKctJ)

Have you tried Nightwatch without Mocha?