I had this message too. It happened after I updated my NXT software to the 2.1 version off of the Lego education site. I uninstalled everything and reinstalled the from the disc (version 2.0)--no problems now. Maura Bollinger On 10/21/2010 7:37 PM, Larry & Loreen Thompson wrote: > Has anyone experienced an error with Mindstorms that prevented them > from downloading their programs to their robots? We are getting this > error: > > LEGO MINDSTORMS Education NXT Software has encountered an error... > > A required file is broken > > Ensure that the LEGO MINDSTORMS NXT Software is correctly installed. > > Reinstall the LEGO MINDSTORMS NXT driver on your computer. > > Error code: 1003 > > We now have 3 computers that have given us this error. Each of the > computers is being used with different programs and different robots. > > Any advice would be greatly appreciated. > Loreen > > -- To UNSUBSCRIBE or CHANGE your settings, please visit > https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or > leave the list". > > -- VADCFLL administrative announcements are sent via VADCFLL-ADMIN-L. > Visit https://listserv.jmu.edu/archives/vadcfll-admin-l.html to > subscribe. > -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ADMIN-L. Visit https://listserv.jmu.edu/archives/vadcfll-admin-l.html to subscribe.