>Gib Bogle wrote:
>>I have a simple demo program (on Windows XP) that uses the ctypes module to load a DLL. >>This program works as expected with Python 2.5.4, but fails with Python 2.6.4 (on a different >> machine, each machine has only one Python version installed), with these messages:

>>File "demo.py", line 37, in <module>
>>  mydll = windll.LoadLibrary("DEMO.DLL")
>>File "c:\python26\lib\ctypes\__init__.py, line 431, in LoadLibrary
>>  return self._dlltype(name)
>>File "c:\python26\lib\ctypes\__init__.py, line 353, in __init__
>>  self._handle = _dlopen(self._name, mode)
>>WindowsError: [Error 14001] This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem
>>
>>It isn't clear to me what the "application" is. As far as I know I didn't install anything except Python 2.6.4. Is it possible that ctypes doesn't work with 2.6.4?


Gib Bogle wrote:
<div class="moz-text-flowed" style="font-family: -moz-fixed">It has occurred to me that the error may have nothing to do with ctypes. The DLL was built on one machine and copied to the other (which doesn't have the compiler installed). Although both machines are running Windows XP, there might be some subtle differences.

I see that the build machine has XP Professional, Version 2002, Service Pack 2, while the machine that fails to load the DLL has XP Home Edition, Version 2002, Service Pack 3. Who knows.

</div>

The application is "python.exe". And usually, when it gives such an error, there's a missing DLL, or one of improper version.

I think you want to run Dependency-Walker.  See
   http://msdn.microsoft.com/en-us/library/ms235265.aspx

for a description, and follow its link to
   http://go.microsoft.com/fwlink/?linkid=132640

to download it.

DaveA

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