http://www.windowsupdatesdownloader.com/UpdateLists.aspx specifically says that "in order to use the ULs, they must be in the same folder as the Windows Updates Downloader program folder" yet this simply does not work. I'd like to be able to use WUD as a portable app but I am unable to because the only way to get it to recognise the ULZ files is to install WUD and double-click on them.