[GRASS-windows] wingrass 6.4 installation problem

[Colin Nielsen]

We do our best to make sure no arcane knowledge, Python or otherwise,
is required to run GRASS.

This error seems to pop up when there is another pre-existing Python
version installed on the computer, for example from ArcGIS. Grass's
python gets confused by the python files in windows\system32. You can
try replacing windows\system32\pywintypes25.dll mentioned in the error
(but make a backup copy) with the one in the grass installation folder
(GRASS-6-SVN\Python25\Lib\site-packages\pywin32_system32\pywintypes25.dll).
Hopefully this will allow both ArcGIS and GRASS to run without
problems.

For more: http://n2.nabble.com/wingrass-and-ArcGIS-with-Python-td3448609.html

Please let us know how it goes.

-Colin

On Mon, Dec 21, 2009 at 3:23 PM, M July <mlc652 at gmail.com> wrote:
> I downloaded the native version wingrass-6.4.osvn-r40049-1-setup.exe and
> performed the installation.  I'm using a Windows Vista 32-bit system.  Two
> icons appeared on the desktop as a result of the installation.  When I
> double click the msys.bat icon I first get an error window:
> python.exe-Entry Point Not Found
> The procedure entry point
> ?PyWinObject_As Handle@@YAHPAU_object@@PAPAX at Z could not
> be located in the dynamic link library pywintypes25.dll
>
> When this window is closed, the "M" window has the following text:
> Cleaning up temporary files ...
> Starting GRASS ...
> Traceback (most recent call last):
>   File "c:/GRASS-6-SVN/etc/wxpython/gis_set.py", line 848, in <module>
>     import gui_modules.gcmd as gcmd
>   File "c:\GRASS-6-SVN\etc\wxpython\gui_modules\gcmd.py", line 42, in
> <module>
>     from win32file import ReadFile, WriteFile
> ImportError: DLL load failed: The specified procedure could not be found.
> Error in GUI startup. If necessary, please
> report this error to the GRASS developers.
> Switching to text mode now.
> Hit RETURN to continue
>
> When RETURN is hit, Grass shuts down.  I don't know anything about python
> (or wxpython), but both of the objectionable files exist:
> File "c:\GRASS-6-SVN\etc\wxpython\gis_set.py"
> File "c:\GRASS-6-SVN\etc\wxpython\gui_modules\gcmd.py
>
> If I need to be an expert in Python and other arcane subjects, I should
> probably just give up now.  On the other hand if it is not hard to get GRASS
> running, I'll keep at it - provided someone can tell me what I did wrong or
> can point me to some documentation that can help me get this up and running.
>
> Thanks.
> Matt
>
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