diff --git a/MatterControl.OpenGL/GCodeRenderer/GCodeVertexBuffer.cs b/MatterControl.OpenGL/GCodeRenderer/GCodeVertexBuffer.cs
index 91ceabf33..35e6d62f3 100644
--- a/MatterControl.OpenGL/GCodeRenderer/GCodeVertexBuffer.cs
+++ b/MatterControl.OpenGL/GCodeRenderer/GCodeVertexBuffer.cs
@@ -58,8 +58,8 @@ namespace MatterHackers.GCodeVisualizer
 		{
 			try
 			{
-				GL.GenBuffers(1, out vertexID);
-				GL.GenBuffers(1, out indexID);
+				vertexID = GL.GenBuffer();
+				indexID = GL.GenBuffer();
 				SetBufferData(ref indexData, ref colorData);
 			}
 			catch
diff --git a/Program.cs b/Program.cs
index 0b9135f06..78b5a6a45 100644
--- a/Program.cs
+++ b/Program.cs
@@ -39,7 +39,6 @@ using MatterHackers.Agg;
 using MatterHackers.Agg.Platform;
 using MatterHackers.Agg.UI;
 using MatterHackers.MatterControl.DataStorage;
-using MatterHackers.MatterControl.SettingsManagement;
 using MatterHackers.MatterControl.SlicerConfiguration;
 using MatterHackers.SerialPortCommunication.FrostedSerial;
 using Microsoft.Extensions.Configuration;
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 028e42956..76b561b55 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 028e429560867a42e01d6c0bb3320afd05167c34
+Subproject commit 76b561b55e80f930021a60c66507d00a03939625