In postinstall pywin32 seems to rely on the python24.dll so it gives this error:
Traceback (most recent call last):
File "<string>", line 365, in <module>
File "<string>", line 157, in install
ImportError: DLL load failed: Das angegebene Modul wurde nicht gefunden.
*** run_installscript: internal error 0xFFFFFFFF ***
See also the attached screenshot.
I had installed python24 on that same machine but have uninstalled it meanwhile.
NB: While there was accidentally a python24.dll in the same path I started the pywin32 installer, this one seemed to be executed but the another error appeared:
Traceback (most recent call last):
File "<string>", line 365, in <module>
File "<string>", line 157, in install
ImportError: Module use of python24.dll conflicts with this version of Python.
*** run_installscript: internal error 0xFFFFFFFF ***
Screenshot of error message