Turtlebot Navigation Error in Fuerte and 12.04

edit

I am trying to run the navigation demo in Fuerte and 12.04 Precise, after completely successfully running the SLAM GMAP demo, and I get the following rolling list of errors which goes on forever. Does anyone know what might be wrong?

rscan/CloudThrottle openni_manager cloud_in:=/camera/depth/points cloud_out:=cloud_throttled __name:=pointcloud_throttle __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/pointcloud_throttle-4.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/pointcloud_throttle-4*.log
respawning...
[pointcloud_throttle-4] restarting process
process[kinect_laser_narrow-6]: started with pid [8744]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[pointcloud_throttle-4]: started with pid [8746]
[openni_launch-3] process has died [pid 8605, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load openni_camera/OpenNINodelet openni_manager __name:=openni_launch __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/openni_launch-3.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/openni_launch-3*.log
respawning...
[openni_launch-3] restarting process
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[openni_launch-3]: started with pid [8772]
[kinect_laser-5] process has died [pid 8632, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudToScan openni_manager cloud:=/cloud_throttled __name:=kinect_laser __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser-5.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser-5*.log
respawning...
[kinect_laser_narrow-6] process has died [pid 8635, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudToScan openni_manager cloud:=/cloud_throttled scan:=/narrow_scan __name:=kinect_laser_narrow __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser_narrow-6.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser_narrow-6*.log
respawning...
[kinect_laser-5] restarting process
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[kinect_laser-5]: started with pid [8824]
[kinect_laser_narrow-6] restarting process
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[kinect_laser_narrow-6]: started with pid [8829]
[ INFO] [1347468668.184002927]: Sim period is set to 0.20
[openni_launch-3] process has died [pid 8693, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load openni_camera/OpenNINodelet openni_manager __name:=openni_launch __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/openni_launch-3.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/openni_launch-3*.log
respawning...
[openni_launch-3] restarting process
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[openni_launch-3]: started with pid [8884]
[pointcloud_throttle-4] process has died [pid 8643, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudThrottle openni_manager cloud_in:=/camera/depth/points cloud_out:=cloud_throttled __name:=pointcloud_throttle __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/pointcloud_throttle-4.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/pointcloud_throttle-4*.log
respawning...
[kinect_laser-5] process has died [pid 8741, exit code 255, cmd /opt/ros/fuerte/stacks/nodelet_core/nodelet/bin/nodelet load pointcloud_to_laserscan/CloudToScan openni_manager cloud:=/cloud_throttled __name:=kinect_laser __log:=/home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser-5.log].
log file: /home/turtlebot/.ros/log/661c8e88-fcf9-11e1-8620-485d607f80f5/kinect_laser-5*.log
respawning...
[kinect_laser_narrow-6] process ...