pcl and openni_launch question

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Hello all,

I am trying to get my Kinect working with the pcl tutorial programs on the ros.org/wiki/pcl/Tutorials website. I have everything build and when I go to run the program I use these commands.

Start roscore. Ros launch the openni using roslaunch openni_launch openni.launch. Then rosrun my example program with the input as the openni point2: rosrun my_pcl_tutorial example input:=/camera/depth_registered/points.

To see if it is running correctly I used rxgraph and unfortunately it says the communication with my_pcl_tutorial failed. Where have I gone wrong here?

Cheers, Martin