Unable to start monodevelop

Hi,

I've updated from svn MD, mono, mcs, libgdiplus, gtk-sharp
et al and for
the past day or so had the following come up when I start
MD.

System.InvalidCastException: Cannot cast from source type to
destination
type.
  at
MonoDevelop.Projects.ProjectService.OnSerializableExtensionC
hanged
(ExtensionAction action, System.Object item) [0x00000] 
  at (wrapper delegate-invoke)
System.MulticastDelegate:invoke_void_ExtensionAction_object
(MonoDevelop.Core.AddIns.ExtensionAction,object)
  at
MonoDevelop.Core.AddIns.AddInService.RegisterExtensionItemLi
stener
(System.String path,
MonoDevelop.Core.AddIns.ExtensionItemListener
listener, Boolean notifyCurrentNodes) [0x00000] 
  at
MonoDevelop.Core.AddIns.AddInService.RegisterExtensionItemLi
stener
(System.String path,
MonoDevelop.Core.AddIns.ExtensionItemListener
listener) [0x00000] 
  at MonoDevelop.Projects.ProjectService.InitializeService
() [0x00000] 
  at MonoDevelop.Core.ServiceManager.FetchService
(System.Type
serviceType) [0x00000] 
  at MonoDevelop.Core.ServiceManager.GetService (System.Type
serviceType) [0x00000] 
  at MonoDevelop.Projects.Services.get_ProjectService ()
[0x00000] 
  at MonoDevelop.Ide.Gui.ProjectOperations..ctor ()
[0x00000] 
  at MonoDevelop.Ide.Gui.IdeApp.Initialize (IProgressMonitor
monitor)
[0x00000] 
  at MonoDevelop.Ide.Gui.IdeStartup.Run (System.String[]
args)
[0x00000] 

Any ideas what is causing this?

TTFN

Paul
-- 
"Logic, my dear Zoe, is merely the ability to be wrong
with authority" -
Dr Who

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