Crashing Using Tutorial Code?

[spacewesterns]

I was working my way through the lejos tutorial and got to the "Controlling the Motors". I used the code suggested for MotorTutor1 (http://lejos.sourceforge.net/nxt/nxj/tutorial/MotorTutorial/MotorTutor1.html. However I received a data abort error message after running on the brick. I would assume being a tutorial the code would be fine, so I'm quite perplexed about what the issue could be. I can use HelloWorld without any issue.

To compile and upload I did the following:

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nxjc MotorTutor1.java

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nxjlink -o MotorTutor1.nxj MotorTutor1

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nxjupload MotorTutor1.nxj

Help would be greatly appreciated!

[skoehler]

You're using leJOS 0.9.1-3?
Did you run any program successfully?
Have you upraded your leJOS recently, but forgot to flash the firmware of the brick?

[spacewesterns]

Hi.

I have all the latest software/firmware (installed it all today). I have got two programs to work (HelloWorld and a bluetooth one I forget the name of) however I seem to get this issue with motor related programs (I've tried two so far).

[skoehler]

I just tried to reproduce the error. I copy/pasted the code of class MotorTutor1 from the link you provided. I then executed the commands that you mentioned. But the program worked as expected.
I assume, the Data Abort happens every time?

Can you, just to be sure, please run nxjflash again, preferably on the command line? Can you also make sure, that no other copy of leJOS is on your PC?
Data aborts are often caused by a version mismatch between the firmware on the NXT and leJOS on the PC.

[spacewesterns]

In the end I got it working, but I had to install an older version of the firmware. Thanks for the advice.

[skoehler]

In the end I got it working, but I had to install an older version of the firmware. Thanks for the advice.

Wait what!? What firmware was on the NXT before you downgraded? Which version did you end up installing?