Looks like you have a new version of ecl underneath but not the latest version of the kobuki sources. Check that first. --- [Visit Topic](https://discourse.ros.org/t/turtlebot2-demo-with-beta-1-build-issue/1051/2) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: