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SfDataGrid crashed when localization

in the sfdatagrid localization sample(Samples\Syncfusion\Windows\16.4.0.42\DataGrid.WinForms\Samples\Localization\CS)
i used Localization2012.sln

after adding this code : this.sfDataGrid1.FilterRowPosition = Syncfusion.WinForms.DataGrid.Enums.RowPosition.Top;

the sfdatagrid will crash when click the row filter in column 2 

carshed log as:
System.ArgumentNullException was unhandled
  HResult=-2147467261
  Message=Value cannot be null.
Parameter name: item
  Source=System.Windows.Forms
  ParamName=item
  StackTrace:
       at System.Windows.Forms.ListBox.ObjectCollection.AddInternal(Object item)
       at System.Windows.Forms.ListBox.ObjectCollection.AddRangeInternal(ICollection items)
       at Syncfusion.WinForms.DataGrid.RowFilter.FilterRowCellRenderer`1.InitializeFilterOptionsPopup()
       at Syncfusion.WinForms.DataGrid.RowFilter.FilterRowCellRenderer`1.OpenFilterOptionPopup()
       at Syncfusion.WinForms.DataGrid.RowFilter.FilterRowCellRenderer`1.OnMouseUp(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, MouseEventArgs e)
       at Syncfusion.WinForms.DataGrid.Renderers.GridCellRendererBase.MouseUp(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, MouseEventArgs e)
       at Syncfusion.WinForms.DataGrid.GridHandler.OnMouseUp(Object sender, MouseEventArgs e)
       at System.Windows.Forms.MouseEventHandler.Invoke(Object sender, MouseEventArgs e)
       at System.Windows.Forms.Control.OnMouseUp(MouseEventArgs e)
       at Syncfusion.WinForms.Controls.SfScrollControl.OnMouseUp(MouseEventArgs e)
       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at Syncfusion.WinForms.Controls.SfScrollControl.WndProc(Message& msg)
       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(IntPtr 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(Form mainForm)
       at Localization.Program.Main() in f:\developsoftware\Samples\Syncfusion\Windows\16.4.0.42\DataGrid.WinForms\Samples\Localization\CS\Program.cs:line 27
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: