CakePHP 2.4 - Carrego um controller para o administrator com new Controller()

AdministratorController.php

App::import('Controller', 'Users');
App::import('Controller', 'Business');

class AdministratorController extends AppController {

       public function panel_profile() {
		switch ($this->userDataGroupID) {
			// Case Group is Developer's
			case 1 :
				$Users = new UsersController;
				$Users->dev_profile();
				break;
			
			// Case Group is Administrator's
			case 2 :
				$Users = new UsersController;
				$Users->panel_profile();
				break;
			
			// Case Group is Business
			case 5 :
				
				$Business = new BusinessController;
				$Business->panel_profile();
				break;
			
			// Case not group
			default :
				$Users = new UsersController;
				$Users->logout();
		}
	}

        ...

}

AppController.php

// function in AppController() -> __afterRender()

if (isset(Router::getParams()['prefix']))
	if (is_array($arr))
		$render = $arrRender['pagesDir'] .  '/' . $arr[0] . '/' . $arr[1];

$this->render($render); # aqui gera o erro

BusinessController.php

// BusinessController.php

public function panel_profile() {
	//
		
	$this->layout = $this->folderLayout . "/" . Router::getParams()['prefix'];
	$this->__afterRender(array("Business", "panel_profile"));
}

errors.log

Fatal Error
Error: Call to a member function body() on a non-object	
File: /srv/cores/CakePHP/cakephp-2.4.7/lib/Cake/Controller/Controller.php	
Line: 954