title: recaptcha does not exist, or could not be auto-loaded
body: <p>I have a project installed on my windows , and today i need to install on a Ubuntu server. The project is saved on an svn sever. so i just use co to check out the project and update all the vendor bundles. all is ok when is get to the web/config.php:<br>
       To enhance your Symfony experience, itâ€™s recommended that you fix the following :</p>
  
  <pre><code>Install and enable the intl extension.
  Set short_open_tag to off in php.ini*.
  
  * Changes to the php.ini file must be done in "/home/siteadm/common/php/Perso.ini". 
  </code></pre>
  
  <p>so when i click 'go to the welcome page',i got :   </p>
  
  <pre><code>  AnnotationException: [Semantical Error] The annotation "@EWZ\bundle\RecaptchaBundle\Validator\Constraints\True" in property Acme\...\User::$recaptcha does not exist, or could not be auto-loaded.  
  </code></pre>
  
  <p>in fact it works well on my locale. The userbunle usring recapchaBundle and FOSUserbundle, they all works well on my local windows machine.</p>
  
  <p>i check the /vendor directory: they are 755</p>