Hello,I am trying to follow the Dynamixel motor tutorials. I receive and error when trying to run the command roslaunch mydynamixeltutorial start_controller.launch.

self.diagnosticspub = rospy.Publisher('/diagnostics', DiagnosticArray) [INFO] [WallTime: 1440579977.825270] pantiltport: Pinging motor IDs 1 through 25... [ERROR] [WallTime: 1440579979.830732] Exception thrown while getting attributes for motor 1 - 360 [ERROR] [WallTime: 1440579979.839960] Exception thrown while getting attributes for motor 1 - 360 [ERROR] [WallTime: 1440579979.849312] Exception thrown while getting attributes for motor 1 - 360 [ERROR] [WallTime: 1440579979.858010] Exception thrown while getting attributes for motor 1 - 360 [ERROR] [WallTime: 1440579979.866353] Exception thrown while getting attributes for motor 1 - 360 [INFO] [WallTime: 1440579979.868803] pantiltport: Found 0 motors , initialization complete. /opt/ros/indigo/lib/dynamixelcontrollers/controllermanager.py:126: SyntaxWarning: The publisher should be created with an explicit keyword argument 'queuesize'. Please see http://wiki.ros.org/rospy/Overview/Publishers%20and%20Subscribers for more information. self.diagnostics_pub = rospy.Publisher('/diagnostics', DiagnosticArray)

I have the correct baud rate set for the motor as well as the correct motor IDs,and when i try to launch roslaunch mydynamixeltutorial controller_manager.launch. i got errors [INFO] [WallTime: 1440580069.779623] pantiltport controllerspawner: waiting for controllermanager dxlmanager to startup in global namespace... [INFO] [WallTime: 1440580069.786608] pantiltport controllerspawner: All services are up, spawning controllers... [ERROR] [WallTime: 1440580069.824340] Initialization failed. Unable to start controller tiltcontroller [tiltcontrollerspawner-1] process has finished cleanly log file: /home/hamdi/.ros/log/af511446-4bd1-11e5-bd86-f4b7e2f346af/tiltcontroller_spawner-1*.log all processes on machine have died, roslaunch will exit shutting down processing monitor... ... shutting down processing monitor complete done

Also, a Warning states showed up in the terminal where i had open the start_controller.launch file [WARN] [WallTime: 1440580069.822682] The specified motor id is not connected and responding. [WARN] [WallTime: 1440580069.823288] Available ids: [] [WARN] [WallTime: 1440580069.823701] Specified id: 1