[Matplotlib-users] Matplotlib installation with Python(x,y)

I have a system that has Python(x,y)-2.6.6.2.exe installed.
When running the script "file.py" the following error occurs:

/Traceback (most recent call last): 
 File "file.py", line xx, in <module> 
   import <something> 
 File "includes\something.py", line 31, in <module> 
   import matplotlib.pyplot as plt 
 File "C:\Python26\lib\site-packages\matplotlib\pyplot.py", line 95, in
<module> 
   new_figure_manager, draw_if_interactive, show = pylab_setup() 
 File "C:\Python26\lib\site-packages\matplotlib\backends\__init__.py", line
25, in pylab_setup 
   globals(),locals(),[backend_name]) 
 File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4agg.py",
line 12, in <module> 
   from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\ 
 File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4.py",
line 18, in <module> 
   import matplotlib.backends.qt4_editor.figureoptions as figureoptions 
 File
"C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\figureoptions.py",
line 11, in <module> 
   import matplotlib.backends.qt4_editor.formlayout as formlayout 
 File
"C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 51, in <module> 
   raise ImportError, "Warning: formlayout requires PyQt4 >v4.3" 
ImportError: Warning: formlayout requires PyQt4 >v4.3 /

I think this error message is not related with the real problem, since this
is just an hardcoded string that is displayed in case the import fails
(formlayout.py):
/try:
    from PyQt4.QtGui import QFormLayout
except ImportError:
    raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"/

If I remove this error message the new error message is that he cannot find
the DLL.

If I install matplotlib-1.0.1.win32-py2.6.exe then this error does not occur
anymore.

Could anyone please explain me what is the difference when the matplotlib is
installed via Python(x,y)
or when it is installed separately on top of Python(x,y)?

I saw that there are a few differences on User and System Environment
variable PATH, but I've tried
different combinations and was not able to get rid of this error when the
system does not have the
matplotlib-1.0.1.win32-py2.6.exe installed.

Thank you in advance for your support.
Kind regards,
Antonio




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