Erg, header errors irritating me

Code:
&lt;?php



class Main extends Controller {



      function pollVote()

      {

      $this->load->helper('url');

      redirect('index.php');

      

      //Client's IP Address

      

      

      //Has the voter already participated in this poll?

     

           $this->db->query("UPDATE pollOptions SET votesFor = votesFor+1");

        $choice = $_POST['choice'];

        $this->db->query("INSERT INTO pollVotes (voterID,optionID,voterIP) values(0, $choice, 0)");

        

        

      }



      function main()

      {

      

      parent::Controller();

      $this->load->scaffolding('navlinks');

      

      }



      function index()

      {



           $this->load->helper('url');

        $this->load->helper('form');

        

                $data['catquery'] = $this->db->query("SELECT * FROM navlink_cats ORDER BY categoryID");

             $data['newsquery'] = $this->db->query("SELECT * FROM news ORDER BY newsID DESC LIMIT 3");

             $data['tutorialsquery'] = $this->db->query("SELECT * FROM tutorials ORDER BY tutorialID DESC LIMIT 5");

             $data['pollquery'] = $this->db->query("SELECT * FROM polls ORDER BY pollID DESC LIMIT 1");

             $query1 = $this->db->query("SELECT * FROM members");

             $query2 = $this->db->get('tutorials');

             $query3 = $this->db->get('smf_topics');

             $query4 = $this->db->get('smf_replies');

             $data['statsmems'] = $query1->num_rows();

             $data['statstuts'] = $query2->num_rows();

             $data['statstopics'] = $query3->num_rows();

             $data['statsreplies'] = $query4->num_rows();

             $this->load->view('main_view', $data);

                         

      }

      



      

               

      

}



?&gt;