xsoup

I'm trying to parse an html page using xsoup. This is my code: Document doc = Jsoup.connect("http://appsvr.mardelplata.gob.ar/Consultas07/OrdenesDeCompra/OC/index.asp?fmANIO_CON=2015&fmJURISDICCION_CON=1110200000&fmTIPOCONT_CON=--&fmNRO_OC=&Consultar=Consultar").get(); List<String> filasFiltradas = Xsoup.compile("//div[@id='listado_solicitudes'][//tr[@bgcolor='#EFF5FE' or @bgcolor='#DDEEFF'] | //div[@class='subtitle']]").evaluate(doc).list(); I tested the xpath code with Chrome's "Xpath Helper" extension and it works great, but when I run the code it throws this error: Exception in thread