Unhandled Exception NT 6B10

[Oli]

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************** Exception Text **************
Wilson.ORMapper.ORMapperException: ObjectSpace: Entity Object not being Tracked - NinjaTrader.Cbi.Instrument:ac7503f36e714b5b8cf9f5d dd9ae690f
at Wilson.ORMapper.Internals.Context.get_Item(Object entityObject)
at Wilson.ORMapper.Internals.Instance.PersistChildren (Transaction transaction, PersistDepth persistDepth, Boolean parentDeleted)
at Wilson.ORMapper.Internals.Instance.PersistChanges( Transaction transaction, PersistDepth persistDepth, Boolean parentDeleted)
at Wilson.ORMapper.Transaction.PersistChanges(ICollec tion entityObjects, PersistDepth persistDepth)
at Wilson.ORMapper.ObjectSpace.PersistChanges(ICollec tion entityObjects, PersistDepth persistDepth)
at Wilson.ORMapper.ObjectSpace.PersistChanges(Object entityObject, PersistDepth persistDepth)
at NinjaTrader.Strategy.SaveStrategyForm.OnOK(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventAr gs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message&amp ; m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message&am p; m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Fra...7/mscorlib.dll
----------------------------------------
NinjaTrader
Assembly Version: 6.0.0.10
Win32 Version: 6.0.0.10
CodeBase: file:///C:/Program%20Files/NinjaTrad...injaTrader.exe
----------------------------------------
NinjaTrader.Core


exception window attached as image....

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