I've gotten this a couple of times in the last few days as well.  It
normally shows up as one of the blocks being "greyed out" (very light
colored).  I delete and replace that block and it works fine again.

-----Original Message-----
From: First Lego League in Virginia and DC
[mailto:[log in to unmask]] On Behalf Of Larry & Loreen Thompson
Sent: Thursday, October 21, 2010 7:37 PM
To: [log in to unmask]
Subject: [VADCFLL-L] Error message 1003

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.