title: Doctrine 2.5.4 ArrayCache not found after installation
body: <p>I am trying to update Doctrine version and installing it from archives from Doctrine web site. 
  After installation I have four folders:</p>
  
  <ul>
  <li>Common </li>
  <li>DBAL </li>
  <li>ORM</li>
  <li>Symfony</li>
  </ul>
  
  <p>In the Doctrine folder. </p>
  
  <p>And get an error:</p>
  
  <blockquote>
    <p>Fatal error: Class 'Doctrine\Common\Cache\ArrayCache' not found in
    [ROOT_PATH]\Vendors\Doctrine\ORM\Tools\Setup.php
    on line 145</p>
  </blockquote>
  
  <p>There is indeed no Cache folder in Common, though it did exist in the previous version of Doctrine I had.</p>
  
  <p>I am not using Symfony nor Composer.</p>