Hello Based on the archives on this topic, I tried the following, but the problem is not yet resolved. Just in case it helps for anyone to guide me along. > Ran pythonCcpn from the install directory $HOME/ccpnmr > At the prompt >>> import numpy > Got the following error messages : " Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/rajan/ccpnmr/python2.7/lib/python2.7/site-packages/numpy/__init__.py", line 170, in <module> from . import add_newdocs File "/home/rajan/ccpnmr/python2.7/lib/python2.7/site-packages/numpy/add_newdocs.py", line 13, in <module> from numpy.lib import add_newdoc File "/home/rajan/ccpnmr/python2.7/lib/python2.7/site-packages/numpy/lib/__init__.py", line 17, in <module> from . import scimath as emath ImportError: cannot import name scimath " Thank you for your time.