codeigniter 2.0 Fatal error: Class 'Controller' not found in

Question

i have download the new codeigniter 2.0 and put my controller,model and view files in the new codeigniter 2.0 installation. but i got this error

Fatal error: Class

Answer 1

class Student extends CI_Controller {

  function Student()   {
    parent::__construct(); 

    // load helpers
    $this->load->helper('url');
  }
}

Including the parent::__construct(); rather than parent::Controller();