Hello, I've just installed ROS and Rviz on Ubuntu 10.04, on both 64 bit and (by VMware) 32 bit. When I start Rviz and try to add a Robot Model, I get the following error in the Displays box: URDF | Parameter [robot_description] does not exist, and was not found by searchParam() Isn't it supposed to load a default PR2 robot model, as per the tutorials on youtube? How do I set this right? Thanks. -- View this message in context: http://ros-users.122217.n3.nabble.com/Error-message-in-Rviz-tp1415889p1415889.html Sent from the ROS-Users mailing list archive at Nabble.com.