title: Incompatible file format error message with Zend Optimizer 3.3.9
body: <p>On my local machine, I'm trying to deploy PHP code which was obfuscated using Zend Guard under the PHP 5.2.10 engine.</p>
  
  <p>Since my machine had PHP 5.3, I reckoned the code does not run since it was obfuscated using Zend guard under the older PHP engine.</p>
  
  <p>I managed to downgrade my PHP engine to 5.2.10, and also configured php.ini to use the relevant .so file from ZendOptimizer-3.3.9-linux-glibc23-i386.</p>
  
  <p>However, when I try to run my website, I get the following error message:</p>
  
  <p><code>Fatal error: Incompatible file format: The encoded file has format major ID 0, whereas the Optimizer expects 2 in /var/www/mysite/index.php on line 0</code></p>
  
  <p>What could I be missing out?</p>