Ah yes forgot to say i was following the tutorial:
http://www.ros.org/wiki/sicktoolbox_wrapper/Tutorials/UsingTheSicklms
except for my rosparam
rosparam set sicklms/port /dev/ttyUSB0
rosparam set sicklms/baud 500000
rosparam set sicklms/angle 180
rosparam set sicklms/resolution 1 

it kept crashing within a few seconds then i went on to try to run spacenav
teleop turtle which didnt work by the way that will be another thread. once
the spacenav was running then rviz stayed working, very strange could it be
some kind of buffer problem?


at any rate how do i use the debug tool i'm not following

This is the command to start it from the tutorial
rosrun rviz rviz -d `rospack find sicktoolbox_wrapper`/sick_test.vcg

Do i just use the debug commands like so or should i give it some arguments.
valgrind rosrun rviz rviz -d `rospack find
sicktoolbox_wrapper`/sick_test.vcg
gdb rosrun rviz rviz -d `rospack find sicktoolbox_wrapper`/sick_test.vcg


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