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Object Reference not Set UltraDockManager.FireEvent
posted

This may not be enough to go on but thought I might try anyway - a user of ours is getting a null reference exception with the dock manager after she closes a form in our app. The call stack doesn't have any of our code methods, it's all Infragistics. So far I have been unable to reproduce the issue. I have more info in an error report (screenshot, computer info etc.), should it be needed but I'd have to scrub it first. I don't have a sample app to reproduce the issue. Any ideas? Maybe a known issue?

 

Normal 0 false false false EN-US X-NONE X-NONE

Time of Error: 1/19/2012 8:40:10 AM

 

Exception outermost view of call stack

--------------------------------------------------------------------------------

Exception type: System.NullReferenceException

Source: Infragistics2.Win.UltraWinDock.v10.2

Source Assembly: Infragistics2.Win.UltraWinDock.v10.2.DLL

Source Assembly Version: 10.2.20102.2109

Source Type: Infragistics.Win.UltraWinDock.UltraDockManager

Source Method: Void FireEvent(Infragistics.Win.UltraWinDock.DockManagerEventIds, System.EventArgs)

Debug Build?: True

Message: Object reference not set to an instance of an object.

Stack Trace:

   at Infragistics.Win.UltraWinDock.UltraDockManager.FireEvent(DockManagerEventIds id, EventArgs e)

   at Infragistics.Win.UltraWinDock.UltraDockManager.NotifyPossibleActivePaneChange()

   at Infragistics.Win.UltraWinDock.UltraDockManager.ActivatePane(DockableControlPane pane, Boolean force)

   at Infragistics.Win.UltraWinDock.DockableControlPane.Activate()

   at Infragistics.Win.UltraWinDock.PaneCaptionButtonUIElement.OnMouseDown(MouseEventArgs e, Boolean adjustableArea, UIElement& captureMouseForElement)

   at Infragistics.Win.UIElement.OnMouseDown(MouseEventArgs e, Boolean adjustableArea, UIElement& captureMouseForElement)

   at Infragistics.Win.ControlUIElementBase.ProcessMouseDownHelper(Object sender, MouseEventArgs e)

   at Infragistics.Win.ControlUIElementBase.ProcessMouseDown(Object sender, MouseEventArgs e)

   at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)

   at Infragistics.Win.UltraWinDock.DockControlBase.OnMouseDown(MouseEventArgs e)

   at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks)

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

   at System.Windows.Forms.ContainerControl.WndProc(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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