Index: kernel/utility/email.php
===================================================================
--- kernel/utility/email.php	(revision 15248)
+++ kernel/utility/email.php	(working copy)
@@ -729,7 +729,7 @@
 	{
 		static $design_templates = Array();
 
-		$design_key = $is_html ? 'html' : 'text';
+		$design_key = 'L' . $this->params['language_id'] . ':' . ($is_html ? 'html' : 'text');
 
 		if ( !isset($design_templates[$design_key]) ) {
 			$language = $this->Application->recallObject('lang.current');