Hi Eitan, In response to your question of whether I was publishing /initialpose, I am. It looks like this: header: seq: 49665 stamp: secs: 1291167633 nsecs: 17403000 frame_id: /map pose: pose: position: x: 0.0 y: 0.0 z: 0.0 orientation: x: 0.0 y: 0.0 z: 0.0 w: 1.0 covariance: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] In response to your suggestion of using just localization and the joystick to tele-operate, I move the robot around, but I do not see any change in the topic /amcl_pose. It stays at the same value as /initialpose (all zeros). Hope this is of some diagnostic help. Thanks Shanker -- View this message in context: http://ros-users.122217.n3.nabble.com/Navigation-stack-Error-Aborting-because-a-valid-plan-could-not-be-found-tp1956004p1996583.html Sent from the ROS-Users mailing list archive at Nabble.com.