Upgrading Ember Simple Auth

I am having an issue upgrading ember simple auth.

    TypeError: Cannot read property '__container__' of undefined
        at authenticateSession (http://ift.tt/29JkZR6)
        at Object.<anonymous> (http://ift.tt/2a1RfCH)

I have properly imported the new helper methods using:

import { authenticateSession } from '../helpers/ember-simple-auth';

Any thoughts on what I need to do to get it working?

Here is my test, trying to visit an authenticated route.

import { test } from 'qunit';
import moduleForAcceptance from '../helpers/module-for-acceptance';
import { authenticateSession } from '../helpers/ember-simple-auth';

moduleForAcceptance('Acceptance | overview');

test('visiting /overview', function(assert) {
  authenticateSession();
  visit('/overview');

  andThen(function() {
    assert.equal(currentURL(), '/overview');
  });
});