diff --git a/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/ui/viewmodel/expression/ExpressionVMProvider.java b/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/ui/viewmodel/expression/ExpressionVMProvider.java
index 33c54a67b97..7fb7ed6438b 100644
--- a/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/ui/viewmodel/expression/ExpressionVMProvider.java
+++ b/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/ui/viewmodel/expression/ExpressionVMProvider.java
@@ -24,8 +24,8 @@ import org.eclipse.dd.dsf.ui.viewmodel.IVMLayoutNode;
 import org.eclipse.dd.dsf.ui.viewmodel.IVMRootLayoutNode;
 import org.eclipse.dd.dsf.ui.viewmodel.dm.DMVMRootLayoutNode;
 import org.eclipse.debug.core.DebugPlugin;
-import org.eclipse.debug.core.IExpressionsListener;
 import org.eclipse.debug.core.model.IExpression;
+import org.eclipse.debug.internal.core.IExpressionsListener2;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentation;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
 
@@ -33,10 +33,10 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationCont
  * 
  */
 @SuppressWarnings("restriction")
-public class ExpressionVMProvider extends AbstractDebugDMVMProviderWithCache implements IExpressionsListener
+public class ExpressionVMProvider extends AbstractDebugDMVMProviderWithCache implements IExpressionsListener2
 {
     public static class ExpressionsChangedEvent {
-        enum Type {ADDED, CHANGED, REMOVED}
+        enum Type {ADDED, CHANGED, REMOVED, MOVED, INSERTED}
         public final Type fType;
         public final IExpression[] fExpressions;
         public ExpressionsChangedEvent(Type type, IExpression[] expressions) {
@@ -162,4 +162,12 @@ public class ExpressionVMProvider extends AbstractDebugDMVMProviderWithCache imp
     public void expressionsRemoved(IExpression[] expressions) {
         handleEvent(new ExpressionsChangedEvent(ExpressionsChangedEvent.Type.REMOVED, expressions));
     }
+    
+    public void expressionsInserted(IExpression[] expressions, int index) {
+        handleEvent(new ExpressionsChangedEvent(ExpressionsChangedEvent.Type.INSERTED, expressions));
+    }
+
+    public void expressionsMoved(IExpression[] expressions, int index) {
+        handleEvent(new ExpressionsChangedEvent(ExpressionsChangedEvent.Type.MOVED, expressions));
+    }
 }
diff --git a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMAdapter.java b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMAdapter.java
index d74c297c78f..12fd985be2e 100644
--- a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMAdapter.java
+++ b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMAdapter.java
@@ -29,6 +29,7 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentati
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdate;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxy;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputUpdate;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
 
 /** 
@@ -110,7 +111,7 @@ abstract public class AbstractVMAdapter implements IVMAdapter
     public void update(final IChildrenUpdate[] updates) {
         handleUpdates(updates);
     }
-
+    
     private void handleUpdates(final IViewerUpdate[] updates) {
         try {
             getExecutor().execute(new DsfRunnable() {
@@ -131,6 +132,10 @@ abstract public class AbstractVMAdapter implements IVMAdapter
                 }
             });
         } catch(RejectedExecutionException e) {
+            for (IViewerUpdate update : updates) {
+                update.setStatus(new Status(IStatus.ERROR, DsfUIPlugin.PLUGIN_ID, "VM adapter executor not available", e)); //$NON-NLS-1$
+                update.done();
+            }
         }
     }
     
@@ -190,7 +195,15 @@ abstract public class AbstractVMAdapter implements IVMAdapter
         }
         return null;
     }
-    
+
+
+    public void update(IViewerInputUpdate update) {
+        final IVMProvider provider = getVMProvider(update.getPresentationContext());
+        if (provider != null) {
+            provider.update(update);
+        }
+    }
+
     /**
      * Creates a new View Model Provider for given presentation context.  Returns null
      * if the presentation context is not supported.
diff --git a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMProvider.java b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMProvider.java
index 8bdec75ce00..2ba86fa5b25 100644
--- a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMProvider.java
+++ b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/AbstractVMProvider.java
@@ -38,6 +38,8 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdat
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxy;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputProvider;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputUpdate;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
 import org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy;
 import org.eclipse.debug.internal.ui.viewers.provisional.IAsynchronousContentAdapter;
@@ -486,7 +488,21 @@ abstract public class AbstractVMProvider implements IVMProvider
         return null;
     }
 
-
+    /**
+     * Calculates the proxy input object to be used for the given input in the given
+     * viewer.  By default no proxy object is used an the given element is used
+     * as the input into the view. 
+     * <p>
+     * Sub classes can override this method for view-specific behavior.
+     * 
+     * @see IViewerInputProvider
+     */
+    public void update(IViewerInputUpdate update) {
+        update.setViewerInput(update.getElement());
+        update.done();
+    }
+    
+    
     /**
      * Convenience method that finds the VMC corresponding to given parent 
      * argument given to isContainer() or retrieveChildren().  
diff --git a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMAdapter.java b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMAdapter.java
index 6c82f654f10..648981f77fe 100644
--- a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMAdapter.java
+++ b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMAdapter.java
@@ -5,6 +5,7 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentati
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementContentProvider;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxyFactory;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputProvider;
 
 /**
  * The View Model adapter handles the layout of a given data model within a 
@@ -15,7 +16,7 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationCont
 @ThreadSafe
 @SuppressWarnings("restriction")
 public interface IVMAdapter
-    extends IElementContentProvider, IModelProxyFactory, IColumnPresentationFactory 
+    extends IElementContentProvider, IModelProxyFactory, IColumnPresentationFactory, IViewerInputProvider 
 {
     /**
      * Returns the View Model Provider that is registered for the given presentation
diff --git a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMProvider.java b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMProvider.java
index 66fcaa216a0..60960351190 100644
--- a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMProvider.java
+++ b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/IVMProvider.java
@@ -5,6 +5,7 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentati
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementContentProvider;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxyFactory;
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputProvider;
 
 /**
  * The View Model Provider handles the layout of a given model within a 
@@ -14,7 +15,7 @@ import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationCont
 @ThreadSafe
 @SuppressWarnings("restriction")
 public interface IVMProvider 
-    extends IElementContentProvider, IModelProxyFactory, IColumnPresentationFactory 
+    extends IElementContentProvider, IModelProxyFactory, IColumnPresentationFactory, IViewerInputProvider
 {
     /**
      * Returns the VM Adapter associated with the provider.