Thomas reported:

System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index') at System.Collections.ArrayList.get_Item(Int32 index) at System.Windows.Forms.DataGridViewSelectedRowCollection.get_Item(Int32 index) at SystemTrayMenu.Handler.KeyboardInput.SelectPreviousMenu(Int32 iRowBefore, Menu