Core dumped at ORK

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Hi! i tried to install ORK in ubuntu 14.0.4 and using indigo. i installed it and couchDB successfully and i followed ORK Quick Guide. i ran roscore and openni and when i tried

rosrun object_recognition_capture orb_template -o my_textured_plane

i got following error

Listening for key: s on imshow:save 

Registration? 1


Sync? 0

python: /usr/include/boost/smart_ptr/shared_ptr.hpp:646: typename boost::detail::sp_dereference<T>::type boost::shared_ptr<T>::operator*() const [with T = xn::NodeInfo; typename boost::detail::sp_dereference<T>::type = xn::NodeInfo&]: Assertion `px != 0' failed.
Aborted (core dumped)

how can i fix it? I am new to ros and i am still finding my way around it.