error when upgrading to ember-data beta2 - ember.js

Question

I'm getting this error when trying to load a set of records through a restful api. It works with ember-model but when I switch to ember-data (beta 2) and ember.js (1.0), I get this error.
Assertion failed: No model was found for '0'
App.ApplicationAdapter = DS.RESTAdapter.extend({
host: 'http://localhost:8080',
namespace: 'api'
});
App.Router.map(function() {
this.resource('about');
this.resource('pages', function() {
this.resource('page', { path: ':page_id' });
});
this.resource('login');
});
App.AuthenticatedRoute = Ember.Route.extend({
actions: {
error: function(reason, transition) {
if (reason.status == 403) {
alert('You must login');
this.transitionTo('login');
}
else {
//alert('non 403 error:'+reason.status);
this.transitionTo('login');
}
}
}
});
App.PagesRoute = Ember.Route.extend({
model: function() {
return this.store.find('page');
}
});
App.PageRoute = Ember.Route.extend({
model: function(params) {
return this.store.find('page', params.page_id);
}
});
App.Page = DS.Model.extend({
user: DS.attr('string'),
slug: DS.attr('string'),
zcontent: DS.attr(),
title: DS.attr('string'),
create_time: DS.attr('date'),
update_time: DS.attr('date')
});
Here is what the backend returned:
{
"pages": [
{
"update_time": "2013-01-14 19:59:35.744855",
"title": "",
"id": 38,
"create_time": "2012-08-04 15:08:16",
"user": "robert-jones",
"slug": "orange"
},
{
"update_time": "2013-01-14 19:59:35.899830",
"title": "",
"id": 47,
"create_time": "2012-08-03 10:04:07",
"user": "robert-jones",
"slug": "REVIEWStheraputics"
},
{
"update_time": "2012-12-18 07:16:13.656509",
"title": "'Notes on Temperature Heat Map'",
"id": 17,
"create_time": "2012-12-18 07:14:48.118119",
"user": "robert-jones",
"slug": "50612c27b94ca650"
},
{
"update_time": "2012-12-12 19:48:08.079021",
"title": "'Notes on Dyanmic Heat Map'",
"id": 8,
"create_time": "2012-12-12 19:48:08.013336",
"user": "robert-jones",
"slug": "c5642b4c14d901cf"
}
]
}

Answer 1

I've run into this before when my server was just returning a raw array instead of an object with a root element. That is, instead of this:
{pages : [...]}
I was accidentally returning this:
[...]
Kind of hard to say without a JSBin to look at.