I am trying to install the matplotlib in my pc with the following configuration
Windows 7, 64

>>> numpy.__version__
>>> matplotlib.__version__

once i try to test the code i get the following error fir matplotlib:

>>> import numpy
>>> import numpy as np
>>> import matplotlib
>>> import matplotlib.pyplot as plt

Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    import matplotlib.pyplot as plt
  File "C:\Python26\lib\site-packages\matplotlib\pyplot.py", line 23, in <module>
    from matplotlib.figure import Figure, figaspect
  File "C:\Python26\lib\site-packages\matplotlib\figure.py", line 16, in <module>
    import artist
  File "C:\Python26\lib\site-packages\matplotlib\artist.py", line 6, in <module>
    from transforms import Bbox, IdentityTransform, TransformedBbox, TransformedPath
  File "C:\Python26\lib\site-packages\matplotlib\transforms.py", line 34, in <module>
    from matplotlib._path import affine_transform
ImportError: DLL load failed: %1 is not a valid Win32 application.

can someone help me with this ?