From fbf4d42f0654419bd5123b8c0e289bed5830e272 Mon Sep 17 00:00:00 2001
From: Remco Burema <r.burema@ultimaker.com>
Date: Tue, 27 Aug 2019 15:22:26 +0200
Subject: [PATCH] Active quality group can be None.

part of CURA-6600
---
 cura/Settings/MachineManager.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index e0293c200f..3447581bca 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -598,6 +598,8 @@ class MachineManager(QObject):
         global_container_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
         if not global_container_stack:
             return False
+        if not self.activeQualityGroup:
+            return False
         return self.activeQualityGroup.is_available
 
     @pyqtProperty(bool, notify = activeQualityGroupChanged)