Class MY_Controller not found

[eluser]Mareshal[/eluser]
I am trying to extend the controller class with this code

Code:

//controllers/backend/dashboard.php

class Dashboard extends MY_Controller
{

    var $path = "backend/dashboard/";
    var $inc  = "backend/includes/";

    /**
    * Constructor
    */    
    function __construct()
    {
        parent::MY_Controller();
    }
}

Code:

//libraries/MY_Controller
class MY_Controller extends Controller {
    
    function __construct() {
        parent::Controller();
    }
}

What is wrong here? I read a few articles about this, but I fixed those issues. anything else?

I am using the CI version from BitBucket, could this be an issue?