Fix PHP errors on logout

application/controllers/auth.php

@@ -37,6 +37,7 @@ class Auth extends CI_Controller {
 		}
 
 		$data['messages'] = $this->messages->get('success');
+		$this->messages->clear(); // clear all messages
 
 		if ($this->form_validation->run() === true) {
 			// check for "remember me"

application/libraries/Access.php

@@ -183,6 +183,7 @@ class Access {
 		}
 
 		$this->ci->session->sess_destroy();
+		$this->ci->session->sess_create();
 
 		$this->ci->messages->add(_('Logged out successfully'), 'success');
 		return true;