Fixes to OSB to work with KH 3.3

modules/service/classes/Model/Service/Billing.php

@@ -0,0 +1,21 @@
+<?php defined('SYSPATH') or die('No direct access allowed.');
+
+/**
+ * This class supports Service Billing.
+ *
+ * @package    OSB
+ * @subpackage Product/Service
+ * @category   Models
+ * @author     Deon George
+ * @copyright  (c) 2010 Open Source Billing
+ * @license    http://dev.osbill.net/license.html
+ */
+class Model_Service_Billing extends ORM_OSB {
+	protected $_table_name = 'account_billing';
+
+	// Relationships
+	protected $_has_one = array(
+		'checkout'=>array('far_key'=>'checkout_plugin_id','foreign_key'=>'id'),
+	);
+}
+?>