Hi,
after announcing the new Tech Preview Version I try to create a new Cluster with one Node. Because I want to use my virtual machine I activate the Generic Node Driver.
After that I can select the Docker Machine Node Type. But now I get Javascript Errors and cannot continue because JavaScript is now blocked.
The first javascript error is:
Uncaught TypeError: Cannot read property ‘filterBy’ of undefined
at i. (component.js:26)
at fe.Wt.get (ember-metal.js:2904)
at te (ember-metal.js:2270)
at n.e.RootPropertyReference.n.compute (references.js:116)
at n.e.CachedReference.n.value (references.js:38)
at n.e.NestedPropertyReference.n.compute (references.js:150)
at n.e.CachedReference.n.value (references.js:38)
at t.e.value (runtime.js:228)
at e.initialize (reference.js:369)
at e.peek (reference.js:343)
(anonymous) @ component.js:26
Wt.get @ ember-metal.js:2904
te @ ember-metal.js:2270
e.RootPropertyReference.n.compute @ references.js:116
e.CachedReference.n.value @ references.js:38
e.NestedPropertyReference.n.compute @ references.js:150
e.CachedReference.n.value @ references.js:38
e.value @ runtime.js:228
e.initialize @ reference.js:369
e.peek @ reference.js:343
(anonymous) @ runtime.js:934
e.evaluate @ runtime.js:73
e.next @ runtime.js:7521
e.execute @ runtime.js:7507
r.handleException @ runtime.js:6897
e.handleException @ runtime.js:7096
e.throw @ runtime.js:6776
t.evaluate @ runtime.js:983
e.execute @ runtime.js:6763
e.rerender @ runtime.js:7127
o.render @ renderer.js:68
e.runInTransaction @ ember-metal.js:621
e._renderRoots @ renderer.js:346
e._renderRootsTransaction @ renderer.js:384
e._revalidate @ renderer.js:426
e.invoke @ backburner.js:291
e.flush @ backburner.js:159
e.flush @ backburner.js:361
e.end @ backburner.js:471
e.run @ backburner.js:560
Ne @ ember-metal.js:3875
e.ActionState.e.handler @ action.js:119
(anonymous) @ event_dispatcher.js:235
dispatch @ jquery.js:5206
g.handle @ jquery.js:5014
The second one is:
util.js:453 Uncaught Error: a glimmer transaction was begun, but one already exists. You may have a nested transaction
at e.assert (util.js:453)
at a.e.begin (runtime.js:6636)
at a.begin (environment.js:258)
at n.e._renderRoots (renderer.js:315)
at n.e._renderRootsTransaction (renderer.js:384)
at n.e._revalidate (renderer.js:426)
at e.invoke (backburner.js:291)
at e.flush (backburner.js:159)
at e.flush (backburner.js:361)
at e.end (backburner.js:471)
e.assert @ util.js:453
e.begin @ runtime.js:6636
a.begin @ environment.js:258
e._renderRoots @ renderer.js:315
e._renderRootsTransaction @ renderer.js:384
e._revalidate @ renderer.js:426
e.invoke @ backburner.js:291
e.flush @ backburner.js:159
e.flush @ backburner.js:361
e.end @ backburner.js:471
e._runExpiredTimers @ backburner.js:935
_boundRunExpiredTimers @ backburner.js:429
setTimeout (async)
a.setTimeout @ backburner.js:415
e._installTimerTimeout @ backburner.js:981
e._reinstallTimerTimeout @ backburner.js:963
e._setTimeout @ backburner.js:887
e.later @ backburner.js:740
Ne.next @ ember-metal.js:4348
didReceiveAttrs @ component.js:28
trigger @ core_view.js:65
n @ ember-utils.js:337
e.default.n.Mixin.create.u.(anonymous function) @ view_support.js:60
i @ core_object.js:127
l.create @ core_object.js:299
e.create @ container.js:336
r.create @ curly.js:233
(anonymous) @ runtime.js:1778
e.evaluate @ runtime.js:73
e.next @ runtime.js:7521
e.execute @ runtime.js:7507
r.handleException @ runtime.js:6897
e.handleException @ runtime.js:7096
e.throw @ runtime.js:6776
t.evaluate @ runtime.js:983
e.execute @ runtime.js:6763
e.rerender @ runtime.js:7127
o.render @ renderer.js:68
e.runInTransaction @ ember-metal.js:621
e._renderRoots @ renderer.js:346
e._renderRootsTransaction @ renderer.js:384
e._revalidate @ renderer.js:426
e.invoke @ backburner.js:291
e.flush @ backburner.js:159
e.flush @ backburner.js:361
e.end @ backburner.js:471
e.run @ backburner.js:560
Ne @ ember-metal.js:3875
e.ActionState.e.handler @ action.js:119
(anonymous) @ event_dispatcher.js:235
dispatch @ jquery.js:5206
g.handle @ jquery.js:5014
I hope this help to fix the problem 
Best Regard
Andreas