diff --git a/DesignTools/Operations/Align3D.cs b/DesignTools/Operations/Align3D.cs
index 7ee06248b..c090fd9b3 100644
--- a/DesignTools/Operations/Align3D.cs
+++ b/DesignTools/Operations/Align3D.cs
@@ -361,8 +361,11 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
 					{
 						if (XAlign == Align.None)
 						{
-							// make sure it is where it started
-							AlignAxis(0, Align.Min, OriginalChildrenBounds[i].minXYZ.X, 0, child);
+							if (i < OriginalChildrenBounds.Count)
+							{
+								// make sure it is where it started
+								AlignAxis(0, Align.Min, OriginalChildrenBounds[i].minXYZ.X, 0, child);
+							}
 						}
 						else
 						{
@@ -380,7 +383,10 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
 						}
 						if (YAlign == Align.None)
 						{
-							AlignAxis(1, Align.Min, OriginalChildrenBounds[i].minXYZ.Y, 0, child);
+							if (i < OriginalChildrenBounds.Count)
+							{
+								AlignAxis(1, Align.Min, OriginalChildrenBounds[i].minXYZ.Y, 0, child);
+							}
 						}
 						else
 						{
@@ -398,7 +404,10 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
 						}
 						if (ZAlign == Align.None)
 						{
-							AlignAxis(2, Align.Min, OriginalChildrenBounds[i].minXYZ.Z, 0, child);
+							if (i < OriginalChildrenBounds.Count)
+							{
+								AlignAxis(2, Align.Min, OriginalChildrenBounds[i].minXYZ.Z, 0, child);
+							}
 						}
 						else
 						{
diff --git a/Submodules/MatterSlice b/Submodules/MatterSlice
index 1cec8e732..43bee860f 160000
--- a/Submodules/MatterSlice
+++ b/Submodules/MatterSlice
@@ -1 +1 @@
-Subproject commit 1cec8e732bb95f09fdad483470f8afa84de670e8
+Subproject commit 43bee860f8887ca6c6d64116fb3ed3b3edb61f3c
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 1ec939790..eaeaa76c2 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 1ec9397907ccc1a191421c10278ceec0d99b7687
+Subproject commit eaeaa76c2bf42789a494e6a58a54a434f2cc4c27