title: Fatal error when deploying Codeigniter: Unable to open core/Codeigniter.php
body: <p>I am having this fatal error and warning on my first Codeigniter attempt:</p>
  
  <blockquote>
    <p>Fatal error: require_once() [function.require]: Failed opening
    required 'C:/xampp/htdocs/codeigniter/core/CodeIgniter.php'
    (include_path='.;C:\xampp\php\pear\') in
    C:\xampp\htdocs\admin\index.php on line 202</p>
  </blockquote>
  
  <p>What would cause this? I'm not sure where to begin to look.</p>