From f576b1f1170deb28d3a755d461201161817e2e88 Mon Sep 17 00:00:00 2001
From: Jack Ha <jackha@gmail.com>
Date: Thu, 8 Mar 2018 14:07:01 +0100
Subject: [PATCH] CURA-4400 fix crash when switching from disabled 1st extruder
 to single extruder machine

---
 cura/Settings/MachineManager.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index e3338e9ca7..d6c4671691 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -299,6 +299,7 @@ class MachineManager(QObject):
         containers = container_registry.findContainerStacks(id = stack_id)
         if containers:
             global_stack = containers[0]
+            self._default_extruder_position = "0"  # start off with position 0, later on update the default extruder
             ExtruderManager.getInstance().setActiveExtruderIndex(0)  # Switch to first extruder
             self._global_container_stack = global_stack
             Application.getInstance().setGlobalContainerStack(global_stack)