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object_reconigtion_core ecto_openni error

I try to use object_recognition on fuerte. I follow http://ecto.willowgarage.com/recognition/user.html instruction for install fuerte package on my Ubuntu machine.

But when I run:

rosrun object_recognition_core orb_template.py -o my_textured_plane

or other python script in the object_recognition package I obtain the following error:

user@rainbow:~/ros_workspace/ecto_kitchen$ rosrun object_recognition_core orb_template.py -o ecto
Traceback (most recent call last):
  File "/opt/ros/fuerte/share/object_recognition_core/bin/orb_template.py", line 9, in <module>
    from ecto_openni import SXGA_RES, FPS_15
  File "/opt/ros/fuerte/lib/python2.7/dist-packages/ecto/__init__.py", line 133, in postregister
    e = lookup(cpptypename)
ecto.EctoException:            exception_type  EctoException
                 diag_msg  Could not find cell
                cell_name  ecto_openni::Capture

How to solve it?

Thank you