Index: /controller/wpsg_ShopController.class.php
===================================================================
--- /controller/wpsg_ShopController.class.php	(revision 7731)
+++ /controller/wpsg_ShopController.class.php	(revision 7732)
@@ -2624,5 +2624,5 @@
                 }
 
-                $this->callMods('setOrderStatusMail', [$mail_text, $mail_html, $arAttachment, $order_id, $status_id]);
+                $this->callMods('setOrderStatusMail', [&$mail_text, &$mail_html, &$arAttachment, &$order_id, &$status_id]);
 
 				$this->sendMail($mail_text, $this->view['kunde']['email'], 'status', $arAttachment, $order_id, false, $mail_html);