We are getting the following error. Is there something that we can do to solve this issue. Thank you.

System.NullReferenceException: Object reference not set to an instance of an object.
at Infragistics.Win.UltraWinTree.UltraTreeNode.NodeUiaProviderStub.GetParent()
at Infragistics.Win.UIAutomation.Stubs.FragmentUIAProviderStub.GetParentStub()
at Infragistics.Win.UIAutomation.Stubs.FragmentUIAProviderStub.GetAutomationId()
at Infragistics.Win.UltraWinTree.UltraTreeNode.VerifyNodeUiaProviderStub()
at Infragistics.Win.UltraWinTree.UltraTreeNode.GetUiaProviderStub(Boolean createIfNeeded)
at Infragistics.Win.UltraWinTree.UltraTreeNode.GetUiaProviderStub()
at Infragistics.Win.UltraWinTree.NodeCheckBoxUIElement.DoClick()
at Infragistics.Win.UltraWinTree.NodeCheckBoxUIElement.OnClick()
at Infragistics.Win.ControlUIElementBase.ProcessMouseUpHelper(Object sender, MouseEventArgs e)
at Infragistics.Win.ControlUIElementBase.ProcessMouseUp(Object sender, MouseEventArgs e)
at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)
at Infragistics.Win.UltraControlBase.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.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)