diff --git a/MatterControlLib/SlicerConfiguration/EngineMappingsMatterSlice.cs b/MatterControlLib/SlicerConfiguration/EngineMappingsMatterSlice.cs
index 5f86e2356..0e6c10543 100644
--- a/MatterControlLib/SlicerConfiguration/EngineMappingsMatterSlice.cs
+++ b/MatterControlLib/SlicerConfiguration/EngineMappingsMatterSlice.cs
@@ -605,6 +605,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 			if (solids.Any())
 			{
 				bool firstSolid = true;
+				var solidsCount = solids.Count();
 				foreach (var solid in solids)
 				{
 					var itemWorldMatrix = solid.WorldMatrix();
@@ -620,7 +621,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 					outputItems.Add((itemWorldMatrix, Path.Combine(ApplicationDataStorage.Instance.LibraryAssetsPath, solid.MeshPath)));
 					mergeString += $"{savedStlCount++}";
-					if (solids.Count() > 1)
+					if (solidsCount > 1)
 					{
 						if (firstSolid)
 						{
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 66ec79039..b91b97730 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 66ec790396e7903ad9760dbd0f962655fa8f2399
+Subproject commit b91b9773011dd3646c144ecbef6e540243750d91