Segmentation Fault when trying to access Kinect through ecto_openni

[badrobit]

python example.py 
Connecting to device.
 attempting to turn on registration...
Failed to start generating.Bad Parameter sent to the device!
303:/tmp/buildd/ros-fuerte-ecto-openni-0.3.8-0precise-20130313-1459/cells/Capture.cpp

Connected to device.
Failed to update all contexts.A timeout has occurred when waiting for new data!
430:/tmp/buildd/ros-fuerte-ecto-openni-0.3.8-0precise-20130313-1459/cells/Capture.cpp

Segmentation fault (core dumped)

I get the error above when running the following python example taken from the ECTO website:

#!/usr/bin/env python

import ecto
import ecto_openni
import ecto_pcl

plasm = ecto.Plasm()

# capture from kinect and downsample
device = ecto_openni.Capture( 'device' )
cloud_generator = ecto_pcl.NiConverter('cloud_generator')
viewer = ecto_pcl.CloudViewer( "viewer", window_name="Clouds!" )

graph = [ device[:] >> cloud_generator[:],
          cloud_generator[:] >> viewer[:]
        ]

plasm.connect( graph )

if __name__ == "__main__":
    from ecto.opts import doit
    doit(plasm, description='test.')