ZF: Managing 404 Errors with Version 1.0.3

Ok, the description of the Link referring to the version 0.9 solution for Managing 404 errors due to missing modules or actions is wrong. It is not enough to replace Zend::loadClass with Zend_Loader::loadClass. Other functions have been renamed, my current snippet is:

/**
 * Original Snippet from: http://www.bigroom.co.uk/blog/managing-404-errors-in-the-zend-framework
 */
    class NoroutePlugin extends Zend_Controller_Plugin_Abstract
    {
        public function preDispatch(Zend_Controller_Request_Abstract $request )
        {
            $dispatcher = Zend_Controller_Front::getInstance()->getDispatcher();

            $controllerName = $request->getControllerName();
            if (empty($controllerName)) {
                $controllerName = $dispatcher->getDefaultControllerClass($request);
            }
            $className = $dispatcher->formatControllerName($controllerName);
            if ($className)
            {
                try
                {
                    // if this fails, an exception will be thrown and
                    // caught below, indicating that the class can't
                    // be loaded.
                    Zend_Loader::loadClass($className, $dispatcher->getControllerDirectory());
                    $actionName = $request->getActionName();
                    if (empty($actionName)) {
                        $actionName = $dispatcher->getDefaultAction();
                    }
                    $methodName = $dispatcher->formatActionName($actionName);

                    $class = new ReflectionClass( $className );
                    if( $class->hasMethod( $methodName ) )
                    {
                        // all is well - exit now
                        return;
                    }
                }
                catch (Zend_Exception $e)
                {
                    // Couldn't load the class. No need to act yet,
                    // just catch the exception and fall out of the
                    // if
                }
            }

            // we only arrive here if can't find controller or action
            $request->setControllerName( 'blog' );
            $request->setActionName( 'noroute' );
            $request->setDispatched( false );
        }
    }

I hope someone needs this as much as me.