title: Symfony Sandbox 1.2 returns a blank page after unpacking into web folder
body: <p>I have symfony 1.0 running on my Windows XP machine but have recently wanted to try Symfony 1.2.</p>
  
  <p>I unpacked the sandbox and set up a virtual host. The page returned is blank.</p>
  
  <p><a href="http://sf_sandbox/web/" rel="nofollow noreferrer">http://sf_sandbox/web/</a> returns a blank page
  <a href="http://sf_sandbox/web/frontend_dev.php/" rel="nofollow noreferrer">http://sf_sandbox/web/frontend_dev.php/</a> returns a blank page</p>
  
  <p>PHP, SQLite, Mysql are all fine.</p>
  
  <p>I tired adding </p>
  
  <pre><code>echo "test"; 
  </code></pre>
  
  <p>to the index.php and it outputs as expected.</p>
  
  <p>Any idea what is going on?</p>