Index: src/Plugins/Wti/Wti.Plugin/WtiGuiPlugin.cs
===================================================================
diff -u -ra4ac4e49268888b50f6f9606a1b8dd8225e1b24f -r91692bb0416bdff85f51b10a3c151d67721d9319
--- src/Plugins/Wti/Wti.Plugin/WtiGuiPlugin.cs	(.../WtiGuiPlugin.cs)	(revision a4ac4e49268888b50f6f9606a1b8dd8225e1b24f)
+++ src/Plugins/Wti/Wti.Plugin/WtiGuiPlugin.cs	(.../WtiGuiPlugin.cs)	(revision 91692bb0416bdff85f51b10a3c151d67721d9319)
@@ -6,7 +6,7 @@
 using DelftTools.Shell.Gui.Forms;
 
 using Mono.Addins;
-
+using Wti.Controller;
 using Wti.Data;
 using Wti.Forms.NodePresenters;
 using Wti.Forms.PropertyClasses;
@@ -51,11 +51,13 @@
         public override IEnumerable<PropertyInfo> GetPropertyInfos()
         {
             yield return new PropertyInfo{ ObjectType = typeof(WtiProject), PropertyType = typeof(WtiProjectProperties)};
+            yield return new PropertyInfo{ ObjectType = typeof(PipingData), PropertyType = typeof(PipingDataProperties)};
         }
 
         public override IEnumerable<ITreeNodePresenter> GetProjectTreeViewNodePresenters()
         {
             yield return new WtiProjectNodePresenter();
+            yield return new PipingDataNodeController().NodePresenter;
         }
 
         public override IRibbonCommandHandler RibbonCommandHandler