ERROR WHILE RUNNING MIT ROS EXAMPLES

root@pekee:~# roslaunch hand_interaction hand_detector.launch
... logging to /home/pekee/.ros/log/5e432b5a-69d3-11e0-85ee-00031d08c9bf/roslaunch-pekee-25737.log
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://pekee:43097/

SUMMARY
========

PARAMETERS
* /rosdistro
* /openni_node1/use_indices
* /openni_node1/depth_registration
* /openni_node1/image_time_offset
* /openni_node1/depth_frame_id
* /openni_node1/depth_mode
* /openni_node1/debayering
* /rosversion
* /openni_node1/projector_depth_baseline
* /openni_node1/rgb_frame_id
* /openni_node1/depth_rgb_translation
* /openni_node1/depth_time_offset
* /openni_node1/image_mode
* /openni_node1/shift_offset
* /openni_node1/device_id
* /openni_node1/depth_rgb_rotation

NODES
/
openni_node1 (openni_camera/openni_node)
kinect_base_link (tf/static_transform_publisher)
kinect_base_link1 (tf/static_transform_publisher)
kinect_base_link2 (tf/static_transform_publisher)
kinect_base_link3 (tf/static_transform_publisher)
handdetector (hand_interaction/detectskelhands)
ressetter (dynamic_reconfigure/dynparam)
skel_tracker (skeletal_tracker/tracker)

ROS_MASTER_URI=http://localhost:11311

core service [/rosout] found
process[openni_node1-1]: started with pid [25755]
process[kinect_base_link-2]: started with pid [25756]
process[kinect_base_link1-3]: started with pid [25757]
process[kinect_base_link2-4]: started with pid [25758]
process[kinect_base_link3-5]: started with pid [25764]
process[handdetector-6]: started with pid [25772]
process[ressetter-7]: started with pid [25781]
process[skel_tracker-8]: started with pid [25784]
[ INFO] [1303144361.773249164]: [/openni_node1] Number devices connected: 1
[ INFO] [1303144361.773610032]: [/openni_node1] 1. device on bus 002:07 is a Xbox NUI Camera (2ae) from Microsoft (45e) with serial id 'A00366915581043A'
[ INFO] [1303144361.781879813]: [/openni_node1] searching for device with index = 1
Waiting for service /openni_camera/set_parameters...
[ INFO] [1303144363.284718158]: [/openni_node1] No matching device found.... waiting for devices. Reason: openni_wrapper::OpenNIDevice::OpenNIDevice(xn::Context&, const xn::NodeInfo&, const xn::NodeInfo&, const xn::NodeInfo&) @ /tmp/buildd/ros-diamondback-openni-kinect-0.1.3/debian/ros-diamondback-openni-kinect/opt/ros/diamondback/stacks/openni_kinect/openni_camera/src/openni_device.cpp @ 64 : creating image generator failed. Reason: Failed to set USB interface!
terminate called after throwing an instance of 'openni_wrapper::OpenNIException'
what(): unsigned int openni_wrapper::OpenNIDriver::updateDeviceList() @ /tmp/buildd/ros-diamondback-openni-kinect-0.1.3/debian/ros-diamondback-openni-kinect/opt/ros/diamondback/stacks/openni_kinect/openni_camera/src/openni_driver.cpp @ 114 : number of streams and devices does not match: 2 devices, 3 depth streams, 2 image streams
[openni_node1-1] process has died [pid 25755, exit code -6].
log files: /home/pekee/.ros/log/5e432b5a-69d3-11e0-85ee-00031d08c9bf/openni_node1-1*.log
InitFromXml failed: File not found!
[skel_tracker-8] process has died [pid 25784, exit code 4].
log files: /home/pekee/.ros/log/5e432b5a-69d3-11e0-85ee-00031d08c9bf/skel_tracker-8*.log
respawning...
[skel_tracker-8] restarting process
process[skel_tracker-8]: started with pid [25901]
InitFromXml failed: File not found!
[skel_tracker-8] process has died [pid 25901, exit code 4].
log files: /home/pekee/.ros/log/5e432b5a-69d3-11e0-85ee-00031d08c9bf/skel_tracker-8*.log
respawning...
[skel_tracker-8] restarting process
process[skel_tracker-8]: started with pid [25952]

hi....