ImportError                               Traceback (most recent call last)

/Users/o/<ipython console> in <module>()

/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/igraph/__init__.py in <module>()
     28 """
     29 
---> 30 from igraph.core import *
     31 from igraph.core import __version__, __build_date__
     32 from igraph.clustering import *

ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/igraph/core.so, 2): Symbol not found: _igraph_diameter_dijkstra
  Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/igraph/core.so
  Expected in: flat namespace
 in /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/igraph/core.so