DockingPaneManager State

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   Hi. I am using v13 ActiveX from c#
I am trying to save the layout of the Panes on my form and restore them when the form is next loaded 
In my FormClosed event I have

DockingPaneGlobalSettings glob = new DockingPaneGlobalSettings();
PropExchange pEx=glob.CreatePropExchange();
DockingPaneLayout myLayout=DockingPaneManager.CreateLayout();
DockingPaneManager.GetLayout(myLayout);
pEx.CreateAsXML(false, "MaintenanceItem");
myLayout.DoPropExchange(pEx);

pEx.SaveToFile(@"c:\Test.xml");

In my FormLoad event (at the very end) I have
DockingPaneGlobalSettings globSettings=new DockingPaneGlobalSettings();
PropExchange pEx = globSettings.CreatePropExchange();
DockingPaneLayout myLayout=DockingPaneManager.CreateLayout();
pEx.CreateAsXML(true,"MaintenanceItem");
if(pEx.LoadFromFile(@"c:\Test.xml"))
{
  myLayout.DoPropExchange(pEx);
  DockingPaneManager.SetLayout(myLayout);
}

The file is saved and seems to relect the state of the panes. But the state of the panes is not restored by the code I have in FormLoad

What am I missing?   The SaveStae and LoadState methods seem to have the same problem; a registry entry is made but
Loading it seems to have no effect on the Pane layout.

Thanks