Lots of Login Code

This is a fairly long question but I have know idea where it's going wrong. I am making an ajax login script using CakePHP 2.0 but it keeps failing. I will post all of my code, and i hope someone has the time to go through it.

This is my sql Database

AccountID   AccountEmail    AccountPassword  AccountActive  
1   chris@hotmail.co.uk     pass            0   
2   chris@gmail.com         pass            1

This is my relevant Model Code

class Account extends AppModel {

public $name = 'Account';
public $validate = array(
    'AccountEmail' => array(
        'required' => array(
            'rule' => array('notEmpty'),
            'message' => 'Please Enter A Valid Email.'
        ),
        'email' => array(
            'rule'    => array('email', true),
            'message' => 'Please supply a valid email address.'
        )
    ),
    'AccountPassword' => array(
        'required' => array(
            'rule' => array('notEmpty'),
            'message' => 'Please Enter A Valid Password.'
        )
    )
);  
}

This is my relevant Controller Code

class AppController extends Controller {

/**
* Class Variables
*/
public $helpers = array('Js', 'Html', 'Session', 'Form');
public $components = array(
    'Session',
    'RequestHandler',
    'Auth' => array(
        'logoutRedirect' => array(
            'controller' => 'Accounts', 
            'action' => 'login'
        ),
        'authError' => 'You can\'t Access That Page',
        'authorize' => array('Controller'),
        'authenticate' => array(
            'Form' => array(
                'fields' => array(
                    'username' => 'AccountEmail', 
                    'password' => 'AccountPassword'
                ),
                'scope' => array('AccountActive' => '1')
            )
        )
    )
);
}

class AccountsController extends AppController {

/**
*   Class Variables 
*/
public $name = 'Accounts';
public $layout = 'Accounts';

/**
*   Class Functions 
*/
public function login()
{
    if ($this->request->is('ajax')) {
        $this->Account->set($this->data);
        if ($this->Account->validates()) {
            if($this->Auth->login()) {
                echo "logged In";
                exit;
            } else {
                echo "Login Failed";
                exit;
            }
        } else {
            echo 'validation/' . json_encode($this->Account->invalidFields());
            exit;
        }
    }
}

I don't think there is anything else. Again i'm sorry for the huge amount of code but i just don't know what you need.
The info is all passed via 'echo' to jquery which at the moment is just displaying the response via 'alert'.
I know the validation is working, but if i enter the info of someone who should be able to login it just shows "Login Failed". Thanks For Your Time.

Your passwords in the database need to be in their hashed form. Using Cake's default settings, 'pass' would be: 1c31af5bd9913ff511fe780f506e6fab68979b90