From 5ba0ac8a43a10dd5191c13d3d23da19517951aa9 Mon Sep 17 00:00:00 2001
From: Jack Ha <jackha@gmail.com>
Date: Wed, 21 Feb 2018 15:59:49 +0100
Subject: [PATCH] CURA-4606 switch to first extruder when switching machines;
 this prevents crashing when switching 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 6cb6724a5a..85a02a8a30 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -308,6 +308,7 @@ class MachineManager(QObject):
         containers = container_registry.findContainerStacks(id = stack_id)
         if containers:
             global_stack = containers[0]
+            ExtruderManager.getInstance().setActiveExtruderIndex(0)  # Switch to first extruder
             Application.getInstance().setGlobalContainerStack(global_stack)
             self._global_container_stack = global_stack
             self.globalContainerChanged.emit()