Error on $ci =& get_instance();

[eluser]xwero[/eluser]
The language class is loaded before the CI instance exists, that is why you get the error.

I would do what you want with a post_controller_constructor hook function

Code:

function cookie_language()
{
   $CI =& get_instance();

   if(isset($_COOKIE['language']))
   {
      // check here if the cookie has a valid value
      $CI->config->set_item('language',$_COOKIE['language']);
   }
   else
   {
      setcookie('language',$CI->config->item('language'),1447);
   }
}

I have a few questions :
Where do the functions get_cookie and set_cookie come from?
Why do you need to set the $language variable after you set a cookie?
And why do you load a language file in the constructor?