From 4c68ca261eecf9aaae35c82b1574d58f4be2a5e3 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@sugarlabs.org>
Date: Tue, 10 Dec 2013 14:07:30 +0000
Subject: fix problem with null path for turtle shells (w Alan Aguiar)

---
diff --git a/TurtleArt/talogo.py b/TurtleArt/talogo.py
index 67aa32c..5380137 100644
--- a/TurtleArt/talogo.py
+++ b/TurtleArt/talogo.py
@@ -1011,7 +1011,7 @@ class LogoCode:
         self.filepath = None
         self.dsobject = None
 
-        if os_path_exists(obj.value):  # file path
+        if obj.value is not None and os_path_exists(obj.value):
             self.filepath = obj.value
         elif self.tw.running_sugar:  # datastore object
             from sugar.datastore import datastore
--
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