From b5c6ca097392d70579ca03186c885ee9551182f2 Mon Sep 17 00:00:00 2001
From: Jaime van Kessel <nallath@gmail.com>
Date: Wed, 15 Mar 2017 10:00:11 +0100
Subject: [PATCH] Starting Cura when no machines added but with a model no
 longer causes exceptions

---
 cura/PrintInformation.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cura/PrintInformation.py b/cura/PrintInformation.py
index 0369f536fa..1eb7aaa7dd 100644
--- a/cura/PrintInformation.py
+++ b/cura/PrintInformation.py
@@ -124,6 +124,9 @@ class PrintInformation(QObject):
         self._calculateInformation()
 
     def _calculateInformation(self):
+        if Application.getInstance().getGlobalContainerStack() is None:
+            return
+
         # Material amount is sent as an amount of mm^3, so calculate length from that
         radius = Application.getInstance().getGlobalContainerStack().getProperty("material_diameter", "value") / 2
         self._material_lengths = []