diff --git a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/GTKEngine.cs b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/GTKEngine.cs
index bf8bb64b..d1510fff 100644
--- a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/GTKEngine.cs
+++ b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/GTKEngine.cs
@@ -5,13 +5,23 @@ namespace UniversalEditor.Environments.GTK
 {
 	public class GTKEngine : UniversalEditor.UserInterface.Engine
 	{
+		protected override void BeforeInitialization ()
+		{
+			base.BeforeInitialization ();
+			Application.Init ();
+		}
+		
 		protected override void MainLoop ()
 		{
-			Application.Init ();
-			MainWindow win = new MainWindow ();
-			win.Show ();
 			Application.Run ();
 		}
+		
+		protected override UniversalEditor.UserInterface.IHostApplicationWindow OpenWindowInternal (params string[] FileNames)
+		{
+			MainWindow mw = new MainWindow();
+			mw.Show ();
+			return mw;
+		}
 	}
 }
 
diff --git a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/MainWindow.cs b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/MainWindow.cs
index 80163c2c..b2aaf106 100644
--- a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/MainWindow.cs
+++ b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/MainWindow.cs
@@ -3,7 +3,7 @@ using Gtk;
 
 using UniversalEditor.UserInterface;
 
-public partial class MainWindow: Gtk.Window
+public partial class MainWindow: Gtk.Window, IHostApplicationWindow
 {	
 	public MainWindow (): base (Gtk.WindowType.Toplevel)
 	{
@@ -76,4 +76,118 @@ public partial class MainWindow: Gtk.Window
 		Application.Quit ();
 		a.RetVal = true;
 	}
+
+	#region IHostApplicationWindow implementation
+	public event EventHandler WindowClosed;
+
+	public void NewFile ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void NewProject (bool combineObjects)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void OpenFile ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void OpenFile (params string[] FileNames)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void OpenProject (bool combineObjects)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void OpenProject (string FileName, bool combineObjects)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveFile ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveFileAs ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveFileAs (string FileName, UniversalEditor.DataFormat df)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveProject ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveProjectAs ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveProjectAs (string FileName, UniversalEditor.DataFormat df)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void SaveAll ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void CloseFile ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void CloseWindow ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public bool ShowOptionsDialog ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void ToggleMenuItemEnabled (string menuItemName, bool enabled)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void RefreshCommand (object nativeCommandObject)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void UpdateStatus (string statusText)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void UpdateProgress (bool visible)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void UpdateProgress (int minimum, int maximium, int value)
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public void ActivateWindow ()
+	{
+		throw new System.NotImplementedException ();
+	}
+	#endregion
 }
diff --git a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/gtk-gui/gui.stetic b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/gtk-gui/gui.stetic
index 0118b136..61cf9407 100644
--- a/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/gtk-gui/gui.stetic
+++ b/CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/gtk-gui/gui.stetic
@@ -106,7 +106,7 @@
           <widget class="Gtk.Toolbar" id="toolbar1">
             <property name="MemberName" />
             <property name="ShowArrow">False</property>
-            <node name="__gtksharp_143_Stetic_Editor_ActionToolbar" type="Toolbar" />
+            <node name="toolbar1" type="Toolbar" />
           </widget>
           <packing>
             <property name="Position">1</property>
diff --git a/CSharp/UniversalEditor.GTK.userprefs b/CSharp/UniversalEditor.GTK.userprefs
index a5c12d89..ab7894a4 100644
--- a/CSharp/UniversalEditor.GTK.userprefs
+++ b/CSharp/UniversalEditor.GTK.userprefs
@@ -2,8 +2,8 @@
   <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" />
   <MonoDevelop.Ide.Workbench ActiveDocument="Libraries/UniversalEditor.UserInterface/Engine.cs">
     <Files>
-      <File FileName="Applications/UniversalEditor.Bootstrapper/Program.cs" Line="17" Column="1" />
-      <File FileName="Libraries/UniversalEditor.UserInterface/Engine.cs" Line="30" Column="32" />
+      <File FileName="Environments/GTK/Engines/UniversalEditor.Environments.GTK/GTKEngine.cs" Line="6" Column="62" />
+      <File FileName="Libraries/UniversalEditor.UserInterface/Engine.cs" Line="327" Column="4" />
     </Files>
     <Pads>
       <Pad Id="ProjectPad">
@@ -13,11 +13,16 @@
           </Node>
           <Node name="Environments" expanded="True">
             <Node name="GTK" expanded="True">
-              <Node name="UniversalEditor.Environments.GTK" expanded="True" selected="True" />
+              <Node name="UniversalEditor.Environments.GTK" expanded="True" />
             </Node>
           </Node>
           <Node name="Libraries" expanded="True">
-            <Node name="UniversalEditor.UserInterface" expanded="True" />
+            <Node name="UniversalEditor.Core" expanded="True">
+              <Node name="Accessors" expanded="True" />
+            </Node>
+            <Node name="UniversalEditor.UserInterface" expanded="True">
+              <Node name="Engine.cs" selected="True" />
+            </Node>
           </Node>
         </State>
       </Pad>
@@ -27,10 +32,7 @@
     </Pads>
   </MonoDevelop.Ide.Workbench>
   <MonoDevelop.Ide.DebuggingService.Breakpoints>
-    <BreakpointStore>
-      <Breakpoint file="/home/beckermj/Documents/Projects2/UniversalEditor/CSharp/Applications/UniversalEditor.Bootstrapper/Program.cs" line="17" />
-      <Breakpoint file="/home/beckermj/Documents/Projects2/UniversalEditor/CSharp/Libraries/UniversalEditor.UserInterface/Engine.cs" line="45" />
-    </BreakpointStore>
+    <BreakpointStore />
   </MonoDevelop.Ide.DebuggingService.Breakpoints>
   <MonoDevelop.Ide.DebuggingService.PinnedWatches />
 </Properties>
\ No newline at end of file