Karen, The other folks have suggested good ideas... I'd also try using a different cable, and if that doesn't work I'd try a different PC or laptop. Please do let us all know what ends up working for you. Good Luck, Kevin Kevin Hines [log in to unmask] www.RoanokeRobotics.org -----Original Message----- From: First Lego League Discussion [mailto:[log in to unmask]]On Behalf Of Karen McSweeney Contreras Sent: Sunday, November 02, 2008 6:03 PM To: [log in to unmask] Subject: [VADCFLL-L] NXT Robot error # 5021 We are suddenly having trouble with our robot accepting downloads from our laptop computer. We get an error message on the laptop computer that says "There is a data wire that does not have a data source. Error # 5021." But there do not appear to be any wires that are not connected!! We tried connecting a different NXT robot to the laptop and we get the same problem; so we know it is the program, not the robot. We deleted the program and reloaded it. Nothing has helped. Any thoughts on a solution or where I can find a solution? ______________________________________________________________ ______________________________________________________________ To UNSUBSCRIBE or CHANGE YOUR SUBSCRIPTION, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". If you want to join the VADCFLL-ADMIN-L mailing list - to which FLL administrative announcements will be distributed - visit https://listserv.jmu.edu/archives/vadcfll-admin-l.html and select "Join or leave the list". ______________________________________________________________ To UNSUBSCRIBE or CHANGE YOUR SETTINGS, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". If you want to join the VADCFLL-ADMIN-L mailing list - to which FLL administrative announcements will be distributed - visit https://listserv.jmu.edu/archives/vadcfll-admin-l.html and select "Join or leave the list".