please go to your application/config/config.php
and on the bottom insert this code
function __autoload($class)
{
if(strpos($class, 'CI_') !== 0)
{
@include_once( APPPATH . 'core/'. $class . EXT );
}
}
Now you are good to go.
please try creating file MY_Controller.php in /core folder with this body
class MY_Controller extends CI_Controller {
public function __construct() {
parent::__construct();
$this->output->enable_profiler(TRUE);
}
}
and use welcome controller if it works.
I missed note: Everything works on my local WAMP server (apache 2.4 php 5.4) and not on the production server (Ubuntu 12.04, apache 2.4, php 5.5)
Please check your case of files/controllers
Please try editing/renaming everything in to lower case (even my_controller extends CI_Controller
).