diff --git a/cura/ConvexHullJob.py b/cura/ConvexHullJob.py
index c639528ec2..690f8a363d 100644
--- a/cura/ConvexHullJob.py
+++ b/cura/ConvexHullJob.py
@@ -49,7 +49,9 @@ class ConvexHullJob(Job):
         self._node.callDecoration("setConvexHullNode", hull_node)
         self._node.callDecoration("setConvexHull", hull)
         self._node.callDecoration("setConvexHullJob", None)
-        #if self._node.getParent().callDecoration("isGroup"):
+        
+        if self._node.getParent().callDecoration("isGroup"):
+            self._node.getParent().callDecoration("setConvexHull", None)
          #   if self._node.getParent().callDecoration("getConvexHull"):
                
         #        self._node.getParent().callDecoration("getConvexHullNode").setParent(None)
diff --git a/cura/ConvexHullNode.py b/cura/ConvexHullNode.py
index 87da8f9a3d..e24d79522c 100644
--- a/cura/ConvexHullNode.py
+++ b/cura/ConvexHullNode.py
@@ -56,10 +56,11 @@ class ConvexHullNode(SceneNode):
             self._material = renderer.createMaterial(Resources.getPath(Resources.ShadersLocation, "basic.vert"), Resources.getPath(Resources.ShadersLocation, "color.frag"))
 
             self._material.setUniformValue("u_color", Color(35, 35, 35, 128))
-
-        renderer.queueNode(self, material = self._material, transparent = True)
+        if self.getParent():
+            renderer.queueNode(self, material = self._material, transparent = True)
 
         return True
+    
 
     def _onNodePositionChanged(self, node):
         #self.setPosition(node.getWorldPosition())