(1) Delete all programs on the brick and then re-download.  This has worked for us before.

(2) Sometimes it may happen that a connector between the blocks in a program is missing.  For the block adjacent to such missing link, move the block with mouse (drag and do not let go) and then bove it back in place.  This will restore the connector.

(3) Our team has learned to close the Mindstorm software after few saves and downloads of program to the brick (10-15 times).  The memory usage keeps going up and can lead to crash later.  Closing and re-opening Mindstorm software clears up the memory.

Sachin.

On Thu, Dec 8, 2011 at 8:42 AM, Sonya Shaver <[log in to unmask]> wrote:

I'm not sure about this, but I do know that there have been times where one program goes awry and then it affects others, in some crazy contagious glitchy way.  But, I have called the customer service at LEGO Education and they are amazingly helpful.  Our brick had gone completely blank at one point this semester and I thought we were done for, but he walked me through this whole reset process and it completely restored it and worked again after that.  So you might try calling them.  Hope you get it figured out!

Sonya Shaver

On Thu, Dec 8, 2011 at 8:36 AM, Kevin Weaver <[log in to unmask]> wrote:

Okay, what a morning.  I wrote a test program to try out a new design, and
uploaded it to the nxt with out issue.  Made tweaks and reuploaded several
times.  After a while one of my kids was updating a different program and got
this attached error code.  After he got that error on his program.  All the
other programs now get that error.  Including the test program I had just
wrote.

We can no longer access any of our programs.

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