当控制器在子文件夹中时，kohana 3.2.3.1路由不工作

<?php defined('SYSPATH') or die('No direct script access.');

class Controller_System_Expenses extends Controller_System {

   public $header = 'Expenses';

   public function action_index() {
      
      $this->template->content = view::factory('system/expenses/listings');
      $this->template->content->expenses = expenses::get_all();
   }


   public function action_update() {
      $expenses = expenses::find_by_id(form::get_value('id'));
      expenses::update($expenses, form::data());

      $this->redirect(request::current()->referrer());
   }
}

Route::set('automate', 'hourly')
   ->defaults(array('controller' => 'cron',
               'action' => 'hourly'
         ));

Route::set('daily', 'daily')
   ->defaults(array('controller' => 'cron',
               'action' => 'daily'
         ));

Route::set('auth', '<action>',
      array(
        'action' => '(login|logout)'
      ))
    ->defaults(array(
        'controller' => 'auth',
        'action'     => 'login',
    ));


Route::set('super', 'system/(<controller>(/<action>(/<id>)))')
    ->defaults(array(
                'directory' => 'system',
        'controller' => 'settings',
        'action'     => 'index',
    ));


Route::set('default', '(<controller>(/<action>(/<id>)))')
    ->defaults(array(
        'controller' => 'Dashboard',
        'action'     => 'index',
    ));