From c2201eb8149921eb9009b4577ab1bad2d0c8d556 Mon Sep 17 00:00:00 2001
From: Ghostkeeper <rubend@tutanota.com>
Date: Fri, 29 Jul 2016 17:34:22 +0200
Subject: [PATCH] Send setting extruder only when extruder is valid

Apparently hasProperty always returns True. Fine. I'll just check the values then...

Contributes to issue CURA-2011.
---
 plugins/CuraEngineBackend/StartSliceJob.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index 689346448d..5b948c90ab 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -227,10 +227,11 @@ class StartSliceJob(Job):
     #   global_inherits_stack property.
     def _buildGlobalInheritsStackMessage(self, stack):
         for key in stack.getAllKeys():
-            if stack.hasProperty(key, "global_inherits_stack"):
+            extruder = int(stack.getProperty(key, "global_inherits_stack"))
+            if extruder >= 0: #Set to a specific extruder.
                 setting_extruder = self._slice_message.addRepeatedMessage("global_inherits_stack")
                 setting_extruder.name = key
-                setting_extruder.extruder = int(stack.getProperty(key, "global_inherits_stack"))
+                setting_extruder.extruder = extruder
 
     ##  Check if a node has per object settings and ensure that they are set correctly in the message
     #   \param node \type{SceneNode} Node to check.