If you try to locate a number of elements which are structurally related to a known element in the hierarchy and use the following code: HtmlControl tablecontrol = Manager.ActiveBrowser.Find.ByXPath<HtmlControl>("//table[@class='tTable tTableStripes']"); HtmlFindExpression expression = new HtmlFindExpression("tagindex=td"); IList<Element> foundelements = tablecontrol.Find.AllByExpression(expression); The code compiles without problems, but at runtime it throws the exception: InnerException: System.NotSupportedException: Find.All is currently not supported for expressions that have a hierarchal dependency