[Resolvido] Problema com plugin acl

Como um amigo recomendou, estou parand de pegar tutoriais e tomei vergonha na cara pra fazer ou tentar fazer uma autenticacao decente, com recursos do zend...mas esta dando erro

segue codigo

<?php
//acl
class Application_Plugin_Acl extends Zend_Controller_Plugin_Abstract {

private $acl,$auth,$role;

public function preDispatch(Zend_Controller_Request_Abstract $request)

{

	$this->_setupAcl();
	$this->auth = Zend_Auth::getInstance();
	$st = $this->auth->getStorage()->read();
	isset($st->perfil_id) ? $this->role = $st->perfil_id : $this->role = 'guest';
	$this->_Allowing();
}

protected function _setupAcl()

{

	$this->acl = new Zend_Acl();

	$this->acl->addResource(new Zend_Acl_Resource('Error'));
	$this->acl->addResource(new Zend_Acl_Resource('Index'));
	$this->acl->addResource(new Zend_Acl_Resource('Admin'));
	$this->acl->addResource(new Zend_Acl_Resource('Noticias'));

	$this->acl->addRole(new Zend_Acl_Role('guest'));
	$this->acl->addRole(new Zend_Acl_Role('escritor'),new Zend_Acl_Role('guest'));
	$this->acl->addRole(new Zend_Acl_Role('admin'),new Zend_Acl_Role('escritor'));

	$this->acl->allow('guest','Error','error');
	$this->acl->allow('guest','Index');
	$this->acl->allow('escritor','Noticias');
	$this->acl->allow('admin','Admin');
}

protected function _Allowing()

{

	$p = new Perfil();
	$st = $this->auth->getStorage()->read();
	$perfil = $p->find($st->perfil_id)->current();
 if(!$this->acl->isAllowed(isset($perfil)?$perfil:$this->role,$this->getRequest()->getControllerName(),$this->getRequest()->getActionName()))
	{
 $this->getRequest()->setActionName('login');
 $this->getRequest()->setControllerName('auth');
	}
}

}

 

<?php

//auth class AuthController extends Zend_Controller_Action {

public function init()
{
/ Initialize action controller here /
}

public function indexAction()
{
// action body
}

public function loginAction()
{

 $loginform = new Application_Form_Login();
 $loginform->setAction('/Auth/login')->setMethod(Zend_Form::METHOD_POST);
 if($this->getRequest()->isPost())
 {
 $login = $this->_getParam('login');
 $senha = $this->_getParam('senha');
 $user = new Usuario();
 $authadapter = new Zend_Auth_Adapter_DbTable($user->getDefaultAdapter());
 $authadapter->setTableName('usuario')->setIdentityColumn('login')->setCredentialColumn('senha')->setCredentialTreatment('MD5(?)');
 $authadapter->setCredential($senha)->setIdentity($login);
 $auth = Zend_Auth::getInstance();
 $result = $auth->authenticate($authadapter);
 if($result->isValid())
 {
 $st = $auth->getStorage();
 $userlogged = $authadapter->getResultRowObject(null,'senha');

 $st->write($userlogged);
 $this->_redirect('/Noticias');
 }

 }
 $this->view->loginform = $loginform;
}

public function logoutAction()

{

 $this->_helper->viewRenderer->setNoRender(true);
 $auth = Zend_Auth::getInstance();
 $auth->clearIdentity();
 $this->_redirect('/Auth/login');
}

}

 

<?php

//boostrap
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap
{

protected function _initAutoload() {
	$loader = Zend_Loader_Autoloader::getInstance ();
	$loader->setFallbackAutoloader ( true );
	$autoloader = new Zend_Application_Module_Autoloader(array(
 'basePath' => APPLICATION_PATH,
 'namespace' => ''
	));

	return $autoloader;
}

protected function _initFrontControllerPlugin()

{

	$front = $this->bootstrap('frontcontroller')->getresource('frontcontroller');
	$front->registerPlugin(new Application_Plugin_Acl());
}
}

e a mensagem de erro

Notice: Trying to get property of non-object in C:\Zend\Apache2\htdocs\zfauthself\application\plugins\Acl.php on line 40

Notice: Trying to get property of non-object in C:\Zend\Apache2\htdocs\zfauthself\application\plugins\Acl.php on line 40

Fatal error: Uncaught exception 'Zend_Acl_Exception' with message 'Resource 'error' not found' in C:\Zend\ZendServer\share\ZendFramework\library\Zend\Acl.php:365 Stack trace: #0 C:\Zend\ZendServer\share\ZendFramework\library\Zend\Acl.php(846): Zend_Acl->get('error') #1 C:\Zend\Apache2\htdocs\zfauthself\application\plugins\Acl.php(42): Zend_Acl->isAllowed('guest', 'error', 'error') #2 C:\Zend\Apache2\htdocs\zfauthself\application\plugins\Acl.php(14): Application_Plugin_Acl->_Allowing() #3 C:\Zend\ZendServer\share\ZendFramework\library\Zend\Controller\Plugin\Broker.php(309): Application_Plugin_Acl->preDispatch(Object(Zend_Controller_Request_Http)) #4 C:\Zend\ZendServer\share\ZendFramework\library\Zend\Controller\Front.php(941): Zend_Controller_Plugin_Broker->preDispatch(Object(Zend_Controller_Request_Http)) #5 C:\Zend\ZendServer\share\ZendFramework\library\Zend\Application\Bootstrap\Bootstrap.php(97): Zend_Controller_Front->dispatch() #6 C:\Zend\ZendServer\share\ZendFramework\library\Zend\Application.php(366): Zend_Applicat in C:\Zend\ZendServer\share\ZendFramework\library\Zend\Controller\Plugin\Broker.php on line 312

 

onde errei, e o que fiz de errado?