Zend: Fejl med non-object?

Hej eksperter.

Jeg har en klasse jeg ikke kan få til at fungere. Når jeg prøver at køre den får jeg fejlen:

Fatal error: Call to a member function getActionController() on a non-object in C:\wamp\bin\php\ZendFramework\ZendFramework-1.11.3\library\Zend\Controller\Action\HelperBroker.php on line 299

Jeg har fundet ud af at det er linjen herunder der volder problemer, men kan ikke gennemskue hvor fejlen ligger:

$this->getHelper('FlashMessenger')->addMessage($field . ' : '. $message);

Håber I er lidt skarpere ;) På forhånd tak.

Her er min kode: (fra bogen pro php)

class CustomersController extends Zend_Controller_Action {
    public function indexAction() {
        $table = new Customers(); // Må så tage my model Customers (from application/models/Customers.php)
        $this->view->customers = $table->fetchAll();
    }
   
    public function redirectasAction() {
        $this->getHelper('redirector')->goto('index');
    }
   
    public function redirectAction() {
        $this->getHelper('FlashMessenger')->addMessage("This was set at the redirector");
        $this->getHelper('redirector')->goto('show');
    }
   
    public function showAction() {
        $this->view->messages = $this->getHelper('FlashMessenger')->getMessages();
    }
   
    public function addAction() {
        Zend_Debug::dump($this->getRequest()->getPost());
       
        $request = $this->getRequest();
       
        //Deterine if processing a post request
        if($request->isPost()) {
           
            //Filter tags from the name field
            $filters = array(
                'name' => 'StripTags'
            );
           
            //Validate name is not less than 1 character and not more than 64
            $validation = array(
                'name' => array (
                    array(
                        'StringLength', 1, 64)
                    )
                );
           
            //Initialize Zend_Filter_input passing it the entire getPost() array
           
            $zfi = new Zend_Filter_Input($filters, $validation, $request->getPost());
           
            //If the validators passed this will be true
            if($zfi->isValid()) {
                //Fetch the data from zfi directly and create an array for Zend_Db
                $clean = array();
                $clean['name'] = $zfi->name;
               
                //Create an instance of the customers table and insert the $clean row
                $customers = new Customers();
                $customers->insert($clean);
               
                //Redirect to the display page after adding
                $this->getHelper('redirector')->goto('index');
            } else {
                // The form didn't validate, get the messages from ZFI
                foreach($zfi->getMessages() as $field=>$messages) {
                    //Put each ZFI message into the FlashMessenger so it shows on the form
                    foreach($messages as $message) {
                        $this->getHelper('FlashMessenger')->addMessage($field . ' : '. $message);
                    }
                }
               
                $this->getHelper('redirector')->goto('add');
            }
        }
       
        // not a post request, check for flash messages and expose to the view
        if($this->getHelper('FlashMessenger')->hasMessages()) {
            $this->view->messages=$this->getHelper('Flashmessenger')->getMessages();
        }
    }
   
}