Paul, I encountered this last year with one of our team's bricks. I think as you add and delete programs the memory becomes fragmented and some of the memory becomes unavailable because it is not contiguous. Last year when our NXT brick was reporting it had like 40K spare and it was not letting us download a ~20K file. I reloaded the firmware (the same version that I was using). Use the Tools Menu --> Update NXT Firmware. This erased all of our programs and files, but then it made more memory available; so there wasn't this missing chunk of memory that we couldn't write to anymore. Has anyone else tried this and had success? Andy Traiger Vienna Robotics Coach Team 3070 -----Original Message----- From: First Lego League in Virginia and DC [mailto:[log in to unmask]] On Behalf Of Bobby p. Carder Sent: Wednesday, October 19, 2011 4:40 PM To: [log in to unmask] Subject: [VADCFLL-L] Memory on the NXT brick Rookie coach here asking what is likely easy to answer. Our team is getting out of memory (on the NXT brick) when they try to transfer programs to the brick. We check the memory via the status function within the 2.0 software and it read the brick only to tell us that there is still 50% unused capacity. We try it again...and na da. The program isn't very big either. Anyone ever seen this? Thanks Paul Carder Team 342 The Lost Marbles -- 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-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-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-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.