Index: wp-admin/edit-tags.php
===================================================================
--- wp-admin/edit-tags.php	(revision 17365)
+++ wp-admin/edit-tags.php	(working copy)
@@ -142,7 +142,7 @@
 	if ( $ret && !is_wp_error( $ret ) )
 		$location = add_query_arg( 'message', 3, $location );
 	else
-		$location = add_query_arg( 'message', 5, $location );
+		wp_die( __('The item could not be updated. ') . $ret->get_error_message() . '</p><p><a href="' . wp_get_referer() . '" onclick="javascript:history.go(-1);return false;">' . __('Go back to try again') . '</a>' );
 
 	wp_redirect( $location );
 	exit;