From 1007833e6b0d28cf78e71ed823bdbca14a0c0317 Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Fri, 15 Jul 2016 12:02:07 +0200
Subject: fix

---
 derivation-editor.js | 1 +
 1 file changed, 1 insertion(+)

(limited to 'derivation-editor.js')

diff --git a/derivation-editor.js b/derivation-editor.js
index 5a6bf7e..2ecbcd4 100644
--- a/derivation-editor.js
+++ b/derivation-editor.js
@@ -1121,6 +1121,7 @@ var isOnScreen = function(obj)
 
 var check_isOnScreen = function (obj)
 {
+  if (DE_target_shapes.length<2) return;
   var x = isOnScreen(obj)
   while (x < 2) {
     if (x == 0) {
-- 
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