= The Problem =
A python program containing :

{{{
#!python
import win32ui
}}}
generates an error in .exe mode (i.e. after being compiled with py2exe) :

{{{
Traceback (most recent call last):
  File "test_win32ui.py", line 5, in <module>
    import win32ui
  File "win32ui.pyo", line 12, in <module>
  File "win32ui.pyo", line 10, in __load
ImportError: DLL load failed: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.
}}}
= Explanation =
win32ui needs the MFC (Microsoft Foundation Classes) DLLs to run in .exe mode.

= Solution =
== Ship the needed DLLs with the application ==
The DLLs and a manifest file can be found in : "C:\Python26\Lib\site-packages\pythonwin\"

You will need the following files :

 * mfc90.dll
 * mfc90u.dll
 * mfcm90.dll
 * mfcm90u.dll
 * Microsoft.VC90.MFC.manifest

To copy files at compile time, add or modify the data_files option in your setup.py :

{{{
#!python
mfcfiles = [os.path.join(mfcdir, i) for i in ["mfc90.dll", "mfc90u.dll", "mfcm90.dll", "mfcm90u.dll", "Microsoft.VC90.MFC.manifest"]]

data_files = [("Microsoft.VC90.MFC", mfcfiles),
              ]

setup(
    data_files = data_files,
    ...
  )
}}}
With this in place, running py2exe should put the files into your dist directory:

{{{
  dist
  |
  +-Microsoft.VC90.MFC
  | |
  | +-Microsoft.VC90.MFC.manifest
  | +-mfc90.dll
  | +-...
  |-...
}}}
== Install "vcredist" ==
An alternative solution is to install the "Microsoft Visual C++ 2008 Redistributable Package". See [[Tutorial#Step522]]