<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Mvc\Service;

use Zend\Form\FormElementManager;
use Zend\ServiceManager\ServiceLocatorInterface;

class FormElementManagerFactory extends AbstractPluginManagerFactory
{
    const PLUGIN_MANAGER_CLASS = 'Zend\Form\FormElementManager';

    /**
     * Create and return the MVC controller plugin manager
     *
     * @param  ServiceLocatorInterface $serviceLocator
     * @return FormElementManager
     */
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $plugins = parent::createService($serviceLocator);
        return $plugins;
    }
}

<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Mvc\Service;

use Zend\Form\Form;
use Zend\Form\FormElementManager;
use Zend\ServiceManager\ServiceLocatorInterface;

class FormElementManagerFactory extends AbstractPluginManagerFactory
{
    const PLUGIN_MANAGER_CLASS = 'Zend\Form\FormElementManager';

    /**
     * Create and return the MVC controller plugin manager
     *
     * @param  ServiceLocatorInterface $serviceLocator
     * @return FormElementManager
     */
    public function createService(ServiceLocatorInterface $serviceLocator)
    {
        $plugins = parent::createService($serviceLocator);
        if ($serviceLocator->has('Di')) {
            $di = $serviceLocator->get('Di');
            $im = $di->instanceManager();
            if (!$im->getTypePreferences('Zend\Form\FormInterface')) {
                $form = new Form;
                $im->setTypePreference('Zend\Form\FormInterface', array($form));
            }
            $plugins->addPeeringServiceManager($serviceLocator);
            $plugins->setRetrieveFromPeeringManagerFirst(true);
        }
        return $plugins;
    }
}

Fix conflict AbstractPluginManager::valdatePlugin with DiAbstractFactory
Fix conflict AbstractPluginManager::valdatePlugin with DiAbstractFactory
