python/nltk problem

[Victor Eijkhout]

This worked before I did "upgrade outdated" a couple of days ago.

%% python
Python 2.6.4 (r264:75706, Nov 14 2009, 07:09:21)
[GCC 4.0.1 (Apple Inc. build 5490)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
 >>> import nltk
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/nltk/__init__.py", line 83, in <module>
     from collocations import *
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/nltk/collocations.py", line 38, in <module>
     from nltk.metrics import ContingencyMeasures,  
BigramAssocMeasures, TrigramAssocMeasures
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/nltk/metrics/__init__.py", line 14, in  
<module>
     from scores import *
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/nltk/metrics/scores.py", line 15, in  
<module>
     from scipy.stats.stats import betai
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/scipy/stats/__init__.py", line 7, in  
<module>
     from stats import *
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/scipy/stats/stats.py", line 203, in <module>
     from morestats import find_repeats #is only reference to  
scipy.stats
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/scipy/stats/morestats.py", line 7, in  
<module>
     import distributions
   File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ 
lib/python2.6/site-packages/scipy/stats/distributions.py", line 27, in  
<module>
     import vonmises_cython
   File "numpy.pxd", line 30, in scipy.stats.vonmises_cython (scipy/ 
stats/vonmises_cython.c:2939)
ValueError: numpy.dtype does not appear to be the correct type object
 >>>