title: Composer installation error - file is not within the allowed path
body: <p>I am trying to install composer on windows (symfony 2 project). The problem is that I always get some strage errors - that a couple of files are not in the allowed path. </p>
  
  <p>I've tried a couple of methods to install compsoer:</p>
  
  <ol>
  <li>Downloading raw composer.phar file, throwing it into the symfony2 root folder and running composer installation command. It gives me an error that usr/.../composer/.htaccess is not within the allowed path</li>
  <li>php -r "path" gives similar results as above, but with more "not in the allowed path" errors</li>
  <li>Windows installer - it throws an error that the installer couldn't execute php.exe file, no idea why.</li>
  </ol>
  
  <p>What's wrong?</p>