Help me to fix INVALID MEX FILE problem.

I'm trying to run the code given in the following link on Ubuntu 13.04 (64 bit):

https://github.com/bensapp/Stretchable-Models-for-Motion-Parsing

I'm getting the following error:

INVALID MEX FILE: 'filepath/cps/utils/mex_opencv_boosting.mexa64': filepath/cps/utils/mex_opencv_bosting.mexa64: undefined symbol: _ZN7CvBoostC1EPKc.

Can someone help me with fixing this error?

Thank you

[Geoff Hayes]

Sabarish - you should provide more details. What function or command are you executing that leads to this error?