error when extending CI_Controller

[eluser]InsiteFX[/eluser]
It works fine for me, what version of CI are you running?

Because the new CI 3.0 Dev has done away with the EXT and you would need to change it to '.php'

For New CI 3.0 Dev

Code:

/*
| -------------------------------------------------------------------------
| Native spl_autoload_register() - by Kenneth Vogt
| -------------------------------------------------------------------------
|
| Here is an updated version of Phil Sturgeon’s code:
|
| Thanks to Phil Sturgeon and Kenneth Vogt.
|
| NOTE:
| Requires PHP 5.3.+
| As of CI 3.0 Dev - The constant EXT has been removed modified
| should work for all version of CI and PHP 5.3
|
| Place at the bottom of your ./application/config/config.php file.
| -------------------------------------------------------------------------
*/
spl_autoload_register(function($class)
{
if (strpos($class, 'CI_') !== 0)
{
  if (file_exists($file = APPPATH . 'core/' . $class . '.php'))
  {
   include $file;
  }
  elseif (file_exists($file = APPPATH . 'libraries/' . $class . '.php'))
  {
   include $file;
  }
}
});

Updated: 06-15-2012
Now will use '.php. and should work all around now.