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David, 
 
We started up the NXT ( we have version 1.0) fresh today, after a good  rest. 
and everything worked fine, it took the block plus several  more!  We did 
discuss one common factor, this seems to happen after  the robot has been in use 
for maybe 2 or so hours with LOTS of programming or  changes to a program.  
Any thoughts?  
The blocks are no longer on the program for me to attatch, the student took  
them off when he could not get them to work.  I did look at them and they  
were simple move blocks, ports b and c, 75 % power, 2 rotations,  brake.  The 
original block was done in degrees, they have learned how to  access the view 
window and push  the robot manually  to it's  desired stopping point and then key 
in the degrees on the move block.
 
Thanks, 
Tracy
 
In a message dated 11/26/2008 10:24:12 A.M. Eastern Standard Time,  
[log in to unmask] writes:
 

In  that case the obvious answer is out of  memory error when downloading  
but from what you are saying there is no such error and it appears to  
download just fine.  Therefore I think you are making a assumption  that 
the block was not included.    There may be physical  conditions where 
they block does not appear to run. 
Can you you attach  your program?

Also do you want to cc the listserv again since there are  a couple of 
others that have chimed  in?

David

[log in to unmask] wrote:
> Hi David,
> Yes,  a team member had 15 blocks and added another and it would not 
>  transfer it to the NXT.  He also added 4 identical blocks and they  
> would not download.   We have also had this problem where  we would add 
> a move forward mini move it would not pick it up on the  NXT so we 
> would put an identical move block in front of it and it  would take 
> it?  I will be sure the kids are "saving" the new  move before 
> downloading.  It happens sporadically. There is no  problem dragging 
> the move block and having it show up on the computer  screen, it just 
> does not always transfer to the brick. We download  and it downloads as 
> always (compiling info is up on the screen and we  get the beep when 
> finished) There does not seem to be any rhyme or  reason to this, it 
> has only happened with one or two long  programs.  We reboot everything 
> and keep playing with it and  usually it will end up taking it so we go 
> back and delete the  "phantom blocks that are identical" and all is 
> well.     I was reading up on My blocks to see if that would help. I 
>  can't find anywhere in the NXT book where there are limitations on 
>  blocks in a program.
>  
> Thanks,
>  Tracy
>  
>  
> In a message dated 11/26/2008  9:15:18 A.M. Eastern Standard Time, 
> [log in to unmask]  writes:
>
>
>     Hi Tracy,
>   What do you mean by " it will not take anymore "?    Is  it that
>     you can
>     not drag  in another block, save the program, download to the brick?
>   David
>
>     Tracy Reed  wrote:
>     > 
>     >  Hi,
>     > I was wondering if anyone knows what the #  of move blocks a single
>     > program can use.   It seems we are writing programs and when we
>     get  to
>     > approx. 15 blocks it will not take  anymore.  Is there a way
>     around  this?
>     > 
>     > Your  input is greatly appreciated.
>     > 
>   > Tracy Reed
>     > 4-H L.E.A.D  Huskies 
>     >
>      >
>     >
>      >
>     >
>      
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