"Error while processing route" with unknown reason - ember.js

Question

My Goal: emulate nested route, but render it into application outlet.
For example:
/videos - top route
/videos/video001 - nested route
/videos/video001/slide001 - not nested. It is on the same level as /videos.
How I am doing this:
I have following router:
App.Router.map(function () {
this.resource('videos', { path: '/videos' }, function () {
this.resource('video', { path: '/:video_id' });
});
this.resource('slide', { path: '/videos/:video_id/:slide_id' });
});
To make 'slide' route work as expected I am overriding 'serialize' method, and
return 'video_id' and 'slide_id'
And at this point everything seems to be ok. At least page loads as expected.
What is the issue?
When I navigate to "/videos/video001" from "/videos/video001/slide001" via "link-to' helper,
I see following error: "Error while processing route: video".
And nothing more. I can't understand what kind of error happens and
why ember can't process route correctly. However I see that URL has been changed to "/videos/video001".
Any suggestions?
How to debug this situation or at least get any useful error message?
UPDATE
This article describe exact current situation and gives some solutions: http://hashrocket.com/blog/posts/ember-routing-the-when-and-why-of-nesting

Answer 1

Ok. I wasn't able to figure out what is the issue, and seems to be nobody able to help with that even on ember irc channel. So I have found interesting article http://hashrocket.com/blog/posts/ember-routing-the-when-and-why-of-nesting and implemented nesting via {into: 'application'}, but to make it work correctly i have overrided renderTemplate hook in all templates to define correct rendering order.
And everything works fine.

Answer 2

I do something similar but without the multiple IDs. Try this in your router:
this.resource('videos', { path: '/videos' }, function () {
this.resource('video', { path: '/:video_id' });
this.resource('videos.video.slide', { path: '/videos/:video_id/:slide_id' });
});
Your routes should be App.VideosRoute, App.VideosVideoRoute, and App.VideosVideoSlideRoute. Same for the controllers (if needed)