Here is my homeprofile controller which also contains a function to change text on the same page once you hit 'change' :

<?php
class HomeProfile extends CI_Controller
{


  function HomeProfile()
  {
    parent::__construct();
    $this->load->model("profiles");
    $this->load->model("profileimages");
    $this->load->helper(array('form', 'url'));
  }

  function changetext()
  {
  $username = $this->session->userdata('username');
  $this->profiles->putProfileText($username, $this->input->post("profiletext"));
  redirect('homeprofile/index');
  }

  function do_upload()
  {
  	$config['upload_path'] = './uploads/';
  	$config['allowed_types'] = 'gif|jpg|png';
  	$config['max_size'] = '100';
  	$config['max_width'] = '1024';
  	$config['max_height'] = '768';

  	$this->load->library('profileimages', $config);
  	//fail show upload form
  	if (! $this->upload->do_upload())
  	{
  		$error = array('error'=>$this->upload->display_errors());

  		$this->load->view('upload_form', $error);
  	}

  	else
  	{
  		//successful upload so save to database
  		$data = array('upload_data' => $this->upload->data());
  		// you may want to delete the image from the server after saving it to db
  		// check to make sure $data['full_path'] is a valid path
  		$image = chunk_split( base64_encode( file_get_contents( $data['full_path'] ) ) );


  		$record = array('user' => $user, 'profileimage' => $image);

  		if ($this->_exists($user))
  		{
  			$this->db->update('profileimages', $record)->where('user', $user);
  		}
  		else
  		{
  			$this->db->insert('profileimages', $record);
  		}
  		// get upload_sucess.php from link above
  		$this->load->view('upload_success', $data);
  	}

  }


  function _exist($user){
  	$query = $this->db->select('*')->from('profileimages')->where('profileimage', $user)->limit(1);
  	return ($query->num_rows() > 0) ? true : false;

  }


  function displayImage()
  {
  	//Retrieve image id from the URI
  	$user = $this->uri->segment(3);
  	$this->db->select('*')->from('profileimages')->where('user', $user);
  	$query = $this->db->get();
  	$image = null;
  	if ($query->num_rows() > 0){
  		$row = $query->row();
  		$image = base64_decode($row->profileimage);
  	}


  	if (!is_null($image)) {
  		//need to know the mine type
  		// header('Content-Type: image/png');

  		header ('Content-Type: image/jpg');
  		imagejpeg(imagecreatefromstring($image), null,100);
  	}
  	else{
  		// load a default profile image
  	}
  }

  function viewProfile(){
  	//load profile detail view for users and display image
  	// 18 = change to image id
  	echo '<img src="<?=base_url()?>profile/displayImage/18" alt="profile"/>';

  }


  function index()
  {
    $username = $this->session->userdata('username');
    //$user = $this->session->userdata('user');

    $viewData['username'] = $username;
  	$viewData['profileText'] = $this->profiles->getProfileText($username);
  	//$viewData['profileimage'] = $this->profileimages->getProfileImage($user);

    $this->load->view('shared/header');
    $this->load->view('homeprofile/homeprofiletitle', $viewData);
    $this->load->view('shared/nav');
    $this->load->view('homeprofile/homeprofileview', $viewData, array('error' => ' ' ));
    $this->load->view('shared/footer');
  }

}

my homeprofile view page:

  <div id="maincontent">
      <div id="primary">
       <?$error;?>
       <?$profileimage;?>
        <?=form_open_multipart('homeprofile/do_upload');?>
        <input type="file" name="userfile" size="20" />
        <?=form_submit('submit', 'Upload')?>
        <?=form_close();?>
      </div>
      <div id="secondary">
      <p>
          <?=$profileText;?>
        </p>
        <p>
          <?=form_open('homeprofile/changetext'); ?>
          <?php $msgbox = array(
          		'name' => 'profiletext',
          		'rows' => '8',
          		'cols' => '30',
          		);?>
         <?=form_textarea($msgbox);?>
         </p>
         <p>
          <?=form_submit('submit', 'Change'); ?>
          <?=form_close(); ?>
        </p>
    </div>
   </div>


I'm hoping to pass the image to the same page once I press the upload and appear within the 'profileimage' container - id rather not use the seperate upload_success page

Currently when I select an image it gives the error Unable to load the requested class: profileimages despite the profileimages model existing - btw I havent changed the model file since:

hp
class ProfileImages extends CI_Model
{
	function ProfileImages()
	{
		parent::__construct();
	}

	function putProfileImage($user, $image)
	{


		$record = array('user' => $user, 'profileimage' => $image);
		if ($this->exists($user))
		{
			$this->db->update('profileimages', $record)->where('user', $user);
		}
		else
		{
			$this->db->insert('profileimages', $record);
		}
	}

	function getProfileImage($user)
	{
		$this->db->select('*')->from('profileimages')->where('user', $user);
		$query = $this->db->get();
		if ($query->num_rows() > 0){
			$row = $query->row();
			return $row->profileimage;
		}

		return Null;


	}

}

I appreciate your help so far.