Problem of "Please point me at a wall." with turtlebot_calibration

edit

I'm a ROS newby attempting to bring up a TurtleBot with ROS Fuerte and Ubuntu 12.04. I've got the laptop and TurtleBot configured and can get the turtlebot_dashboard going and drive the robot around with a keyboard using the keyboard teleop. I can also apply power to the Kinect device and see the three requisite Microsoft USB devices with 'lsusb':

Bus 001 Device 010: ID 045e:02b0 Microsoft Corp. Xbox NUI Motor
Bus 001 Device 017: ID 045e:02ad Microsoft Corp. Xbox NUI Audio
Bus 001 Device 018: ID 045e:02ae Microsoft Corp. Xbox NUI Camera

The problem I have is with turtlebot_calibration. I get the following output:

-------------------------------------------------------------------------
turtlebot@turtlebot ~ $ roslaunch turtlebot_calibration calibrate.launch
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http;//192.168.0.38;56954/

SUMMARY
========

PARAMETERS
 * /kinect_laser/max_height
 * /kinect_laser/min_height
 * /kinect_laser/output_frame_id
 * /kinect_laser_narrow/max_height
 * /kinect_laser_narrow/min_height
 * /kinect_laser_narrow/output_frame_id
 * /openni_launch/debayering
 * /openni_launch/depth_frame_id
 * /openni_launch/depth_mode
 * /openni_launch/depth_registration
 * /openni_launch/depth_time_offset
 * /openni_launch/image_mode
 * /openni_launch/image_time_offset
 * /openni_launch/rgb_frame_id
 * /pointcloud_throttle/max_rate
 * /rosdistro
 * /rosversion
 * /scan_to_angle/max_angle
 * /scan_to_angle/min_angle

NODES
  /
    kinect_breaker_enabler (turtlebot_node/kinect_breaker_enabler.py)
    kinect_laser (nodelet/nodelet)
    kinect_laser_narrow (nodelet/nodelet)
    openni_launch (nodelet/nodelet)
    openni_manager (nodelet/nodelet)
    pointcloud_throttle (nodelet/nodelet)
    scan_to_angle (turtlebot_calibration/scan_to_angle.py)
    turtlebot_calibration (turtlebot_calibration/calibrate.py)

ROS_MASTER_URI=http;//192.168.0.38;11311

core service [/rosout] found
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[kinect_breaker_enabler-1]: started with pid [2132]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[openni_manager-2]: started with pid [2133]
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 [2139]
[ INFO] [1360034582.865846913]: Initializing nodelet with 2 worker threads.
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 [2199]
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 [2218]
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 [2240]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[scan_to_angle-7]: started with pid [2264]
Exception AttributeError: AttributeError("'_DummyThread' object has no attribute '_Thread__block'",) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored
process[turtlebot_calibration-8]: started with pid [2266]
[kinect_breaker_enabler-1] process has finished cleanly
log file: /home/turtlebot/.ros/log/0f317c9e-6f42-11e2-a312-74f06d7d6e3b/kinect_breaker_enabler-1*.log
[ INFO] [1360034585.493648021]: [/openni_launch] Number devices connected: 1
[ INFO] [1360034585.494195015]: [/openni_launch] 1. device on bus 001:18 is a Xbox NUI Camera (2ae) from Microsoft (45e) with serial id 'A00366910379111A'
[ WARN] [1360034585.498586615]: [/openni_launch] device_id is not set! Using first device.
[ INFO ...