Sounds like you have a laser that does not support the SCIP2.0 protocol.

The last person who had this problem was able to find a firmware update here:
http://www.hokuyo-aut.jp/02sensor/07scanner/download/u_dl_license.html

I have updated the troubleshooting page of the wiki:
http://www.ros.org/wiki/hokuyo_node/Troubleshooting#Error:_wrong_data

If you have more detailed symptoms/error messages I could put on the
wiki, please put them up, or send me them so I can add them.

I'm also forwarding you an earlier thread that was probably the same problem.

Cheers,
Blaise

On Thu, Sep 2, 2010 at 6:26 PM, Pablo Hevia-Koch <pablo@hevia-koch.cl> wrote:
> Friends,
>
> I've been trying to use the Hokuyo Stack with a 04LX, following the
> tutorial, but when I start the hokuyo node, it complains about the laser
> sending "wrong data", and when I visualize the data via rviz, there are some
> lines, but definitely not what the laser should send.
>
> I can use the laser perfectly in other applications (Carmen, for example).
>
> Anyone knows what it might be?
>
> Thanks!
> Keep Creating,
>
> Pablo
>
>
>
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