get_instance returns empty object

[eluser]bretticus[/eluser]
have you tried loading the Loader class perhaps?

Code:

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class My_hook {
    public function __construct(){
        $this->loader =& load_class('Loader');
        $this->loader->load->helper('url'); // this is line 6
    }
}

Not tested. Not sure that this won't cause errors.

EDIT: on second thought I have gut feeling that this is a bad idea.