system/i18n/en_US/event.php

   1 <?php defined('SYSPATH') OR die('No direct access allowed.');
   2
   3 $lang = array
   4 (
   5         'invalid_subject'  => 'Attempt to attach invalid subject %s to %s failed: Subjects must extend the Event_Subject class',
   6         'invalid_observer' => 'Attempt to attach invalid observer %s to %s failed: Observers must extend the Event_Observer class',
   7 );