Error: Object reference not set to an instance of an object when attempting to edit an export definition.

When attempting to edit an export definition, a user may receiver Error: Object reference not set to an instance of an object.

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Blackbaud.AppFx.Browser
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System.NullReferenceException: Object reference not set to an instance of an object.

   at Blackbaud.AppFx.Browser.ExportWizardForm.UpdateOutputButtonStatus()

   at Blackbaud.AppFx.Browser.ExportWizardForm.tvOutput_AfterSelect(Object sender, TreeViewEventArgs e)

   at System.Windows.Forms.TreeView.OnAfterSelect(TreeViewEventArgs e)

   at System.Windows.Forms.TreeView.TvnSelected(NMTREEVIEW* nmtv)

   at System.Windows.Forms.TreeView.WmNotify(Message& m)

   at System.Windows.Forms.TreeView.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)

   at System.Windows.Forms.Control.SendMessage(Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.Control.ReflectMessageInternal(IntPtr hWnd, Message& m)

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

   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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)

   at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)

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

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

   at System.Windows.Forms.TreeView.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)

   at System.Windows.Forms.Control.SendMessage(Int32 msg, Int32 wparam, IntPtr lparam)

   at System.Windows.Forms.TreeView.set_SelectedNode(TreeNode value)

   at Blackbaud.AppFx.Browser.ExportWizardForm.tvOutput_MouseDown(Object sender, MouseEventArgs e)

   at System.Windows.Forms.Control.OnMouseDown(MouseEventArgs e)

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

   at System.Windows.Forms.TreeView.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Application.Run(ApplicationContext context)

   at Blackbaud.AppFx.Browser.ShellApplication.RunApp()

   at Blackbaud.AppFx.Browser.Startup.main(String[] args)

Recreate the export definition. 

Environment

 2.9.1001, patch 34

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