Embedded objects and fixtures error

My Structures have embedded Overlay objects, but Ember says, "Error: assertion failed: Unable to find fixtures for model type Sylvius.Overlay"

by kristaps_petersons

HTML

<script src="https://github.com/downloads/wycats/handlebars.js/handlebars-1.0.0.beta.6.js"></script>
<script src="http://cloud.github.com/downloads/emberjs/ember.js/ember-latest.js"></script>
<script src="http://cloud.github.com/downloads/emberjs/data/ember-data-latest.js"></script>
<script type="text/x-handlebars" data-template-name="application">
    {{outlet}}
</script>
<script type="text/x-handlebars" data-template-name="home">
    <h1>Home</h1>
    <p>
    Structures:{{structures.length}}
    </p>
    <ul>
    {{#each structure in structures}}            
        <li>
            ID:{{structure.id}}<br/>
            Name: {{structure.name}}
            Overlays: {{structure.overlays.length}}
            <ul>               
            {{#each overlay in structure.overlays}}
                <li>
                    View: {{overlay.vi}} &nbsp;
                    Path: {{overlay.pa}}
                </li>
            {{/each}}
            </ul>
        </li>
    {{/each}}
    </ul>
</script>

JavaScript

Sylvius = Ember.Application.create();

Sylvius.store = DS.Store.create({
    revision: 4,
    adapter: DS.fixtureAdapter
});

Sylvius.Structure = DS.Model.extend({
    id: DS.attr('number'),
    name: DS.attr('string'),
    overlays: DS.hasMany('Sylvius.Overlay', {
        embedded: true
    })
});

Sylvius.Overlay = DS.Model.extend({
    id: DS.attr('number'),
    vi: DS.attr('string'),
    pa: DS.attr('string'),
    structure: DS.belongsTo('Sylvius.Structure'),

    v: function() {
        return this.get('vi');
    }.property('vi'),

    p: function() {
        return this.get('pa');
    }.property('pa')
});

Sylvius.Overlay.FIXTURES = [];

Sylvius.Structure.FIXTURES = [{
    "id": 0,
    "name": "Test Structure",
    "overlays": [{
        "id": 1,
        "vi": "Isometric",
        "pa": "blah",
        "structure_id": 0
    },
    {
        "id": 2,
        "vi": "Ventral",
        "pa": "Lorem",
        "structure_id": 0
    },
    {
        "id": 3,
        "vi": "Ventral1",
        "pa": "Lorem1",
        "structure_id": 0
    }                 
]}];

Sylvius.ApplicationController = Em.Controller.extend();
Sylvius.ApplicationView = Em.View.extend({
    templateName: 'application'
});

Sylvius.HomeController = Em.ArrayController.extend({
    structures: function() {
        return this.get('content');
    }.property('[email protected]')
});

Sylvius.HomeView = Em.View.extend({
    templateName: 'home'
});

Sylvius.Router = Em.Router.extend({
    enableLogging: true,
    location: 'hash',
    root: Em.Route.extend({

        // STATES
        index: Em.Route.extend({
            route: '/',
            connectOutlets: function(router, context) {
                var appController = router.get('applicationController');
                appController.connectOutlet('home', Sylvius.Structure.find());
            }
        })
    })
});
Sylvius.initialize();