Yes, that works but "%localAppData%\Supremus Corporation\Windows Updates Downloader\" is obviously not "%programFiles%\Windows Updates Downloader\" - "the same folder as the Windows Updates Downloader program folder" according to http://www.windowsupdatesdownloader.com/UpdateLists.aspx. I want to use WUD as a portable app and, therefore, I need WUD to recognize ULZ files in the program folder, not the app data folder.