Building mmLib from svn source requires building the CIF components library by fetching components.cif from a URL that no longer exists:
http://pdb.rutgers.edu/public-component-erf.cif
I believe this file is now located here:
ftp://ftp.wwpdb.org/pub/pdb/data/monomers/components.cif
I believe this could be fixed by replacing L414 of pymmlib/trunk/pymmlib/setup.py:
URL = "http://pdb.rutgers.edu/public-component-erf.cif"
with this
URL = "ftp://ftp.wwpdb.org/pub/pdb/data/monomers/components.cif"