Symfony 2.1 : Test the prod mod => exception using the app.php controller calling ApcClassLoader->__construct - symfony-2.1

Question

Before deploying my symfony 2.1 version into my prod serveur, I wanted to test the behaviour of the prod env.
So I have done a php app/console cache:clear --env=prod --no-debug, after a php app/console assets:install web and now when I'm calling the app controller I have this error.
Google for this case is not my friend :-(
0 /Applications/MAMP/htdocs/myapp/web/app.php(13): Symfony\Component\ClassLoader\ApcClassLoader->__construct('sf2', Object(Composer\Autoload\ClassLoader))
1 {main}
Here my app.php file
use Symfony\Component\ClassLoader\ApcClassLoader; use
Symfony\Component\HttpFoundation\Request;
$loader = require_once DIR.'/../app/bootstrap.php.cache';
// Use APC for autoloading to improve performance // Change 'sf2' by
the prefix you want in order to prevent key conflict with another
application /* $loader = new ApcClassLoader('sf2', $loader);
$loader->register(true);
*/
require_once DIR.'/../app/AppKernel.php';
//require_once DIR.'/../app/AppCache.php';
$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
//$kernel = new AppCache($kernel);
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);
Any help would be very cool
Thanks
Sam

Answer 1

It's failing on ApcClassLoader do you have APC installed? try restart apache.
We can't really see if those APC lines are commented out of not in your app.php, lines return are all messy.