Hi all- I'm following the tutorial here on adding a simulated camera to the pr2: http://www.ros.org/wiki/urdf/Tutorials/AddingSensorsToPR2 I edited my urdf but when I roslaunch pr2_gazebo pr2_empty_world.launch, the new frames and topics don't seem to exist. I verified that it is loading the correct urdf by changing some of the topic names in existing sensors in the urdf and seeing that the topic names are different when I roslaunch. Should I be getting any errors if it can't parse or otherwise make sense of the new simulated camera? I copied the extra stuff from the tutorial directly... Thanks, Adam Adam Leeper Stanford University aleeper@stanford.edu 719.358.3804