From 68d70734ee77c196f8a268cb66523a0d7ea018e4 Mon Sep 17 00:00:00 2001
From: Jaime van Kessel <nallath@gmail.com>
Date: Fri, 28 Feb 2020 13:56:16 +0100
Subject: [PATCH] Skip nodes in modelchecker without active extruder

Fixes CURA-5S
---
 plugins/ModelChecker/ModelChecker.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/ModelChecker/ModelChecker.py b/plugins/ModelChecker/ModelChecker.py
index 0afed28f19..00e87139d5 100644
--- a/plugins/ModelChecker/ModelChecker.py
+++ b/plugins/ModelChecker/ModelChecker.py
@@ -73,6 +73,8 @@ class ModelChecker(QObject, Extension):
         # Check node material shrinkage and bounding box size
         for node in self.sliceableNodes():
             node_extruder_position = node.callDecoration("getActiveExtruderPosition")
+            if node_extruder_position is None:
+                continue
 
             # This function can be triggered in the middle of a machine change, so do not proceed if the machine change
             # has not done yet.