diff --git a/MatterControlLib/ApplicationView/Config/PrinterConfig.cs b/MatterControlLib/ApplicationView/Config/PrinterConfig.cs
index e8a1db6af..1d08a2a07 100644
--- a/MatterControlLib/ApplicationView/Config/PrinterConfig.cs
+++ b/MatterControlLib/ApplicationView/Config/PrinterConfig.cs
@@ -81,7 +81,7 @@ namespace MatterHackers.MatterControl
 				var foundPartSettings = false;
 				var newSceneOverrides = new PrinterSettingsLayer();
 				// accumulate all the scene overrides ordered by their names, which is the order they will be in the design tree
-				foreach (var partSettingsObject in scene.DescendantsAndSelf().Where(c => c is PartSettingsObject3D).OrderBy(i => i.Name))
+				foreach (var partSettingsObject in scene.DescendantsAndSelf().Where(c => c is PartSettingsObject3D && c.Parent?.WorldPrintable() == true).OrderBy(i => i.Name))
 				{
 					foundPartSettings = true;
 					var settings = ((PartSettingsObject3D)partSettingsObject).Overrides;
diff --git a/MatterControlLib/PartPreviewWindow/View3D/Actions/CombineObject3D_2.cs b/MatterControlLib/PartPreviewWindow/View3D/Actions/CombineObject3D_2.cs
index bcdb210eb..5cc926c37 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/Actions/CombineObject3D_2.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/Actions/CombineObject3D_2.cs
@@ -204,7 +204,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow.View3D
 
                 if (set.Count > 1)
                 {
-#if false
+#if true
                     setMesh = BooleanProcessing.DoArray(set.Select(i => (i.mesh, i.matrix)),
                         CsgModes.Union,
                         Processing,
diff --git a/StaticData/Translations/Master.txt b/StaticData/Translations/Master.txt
index 643b62950..586dd5c4a 100644
--- a/StaticData/Translations/Master.txt
+++ b/StaticData/Translations/Master.txt
@@ -2434,6 +2434,9 @@ Translated:Item cannot be exported
 English:Item cannot be exported as AMF
 Translated:Item cannot be exported as AMF
 
+English:Item cannot be exported as MCX
+Translated:Item cannot be exported as MCX
+
 English:Item not Found
 Translated:Item not Found
 
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 171deb557..e83b5b6e0 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 171deb5573a4497a73bf4497fcaae47d7264e1e1
+Subproject commit e83b5b6e0f0030b24513124d84649e6d05417d2b