Thank you Peter, but when I tried to install xpath through its command line (python setup.py install) this error comes: /usr/lib/python2.6/distutils/dist.py:266: UserWarning: Unknown distribution option: 'test_suite' warnings.warn(msg) running install running build running build_py Traceback (most r...

Dear all, I'd tried to compile OpenMM4.0 in my computer that has a GeForce 8400 GS with NVIDIA-SMI 3.295.20 Driver Version: 295.20 and CUDA installed. When I try to install py-dom-xpath using the python version 2.6 this was not succesfull ( command line: python setup.py install). Alternatively, I tr...