From fddb829273505cca1e2a47c42049554b99601a8d Mon Sep 17 00:00:00 2001
From: Jaime van Kessel <nallath@gmail.com>
Date: Fri, 6 Oct 2017 14:15:15 +0200
Subject: [PATCH] Added check to see if selectedPrinter is set

CL-500
---
 plugins/UM3NetworkPrinting/DiscoverUM3Action.qml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml b/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
index b1964c6c06..b9b85ef2d4 100644
--- a/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
+++ b/plugins/UM3NetworkPrinting/DiscoverUM3Action.qml
@@ -279,7 +279,7 @@ Cura.MachineAction
                     wrapMode: Text.WordWrap
                     text:{
                         // The property cluster size does not exist for older UM3 devices.
-                        if(base.selectedPrinter.clusterSize == null || base.selectedPrinter.clusterSize == 1)
+                        if(base.selectedPrinter != undefined && base.selectedPrinter.clusterSize == null || base.selectedPrinter.clusterSize == 1)
                         {
                             return "";
                         }