--- In firebird-python@yahoogroups.com, Pavel Cisar <pcisar@...> wrote:

>

> FDB 0.8.5 was tested on WinXP SP3 + Python 3.2.2.3 (from ActiveState) +
> FB 2.5.1 with no problems at all. So it's either a bug in ctypes in
> Python 3.2.3, which is very unlikely (AFAIK there were no changes in
> ctypes between 3.2.2/3.2.3), or it's something weird in your Firebird
> installation, as ctypes can't open the fbclient.dll. Do you have 64-bit
> Firebird while 32-bit Python (or vice versa) by any chance?
>

No, both are 64 bit. But there are two fbclient.dll:

c:\Program Files\Firebird\Firebird_2_5\bin\fbclient.dll,
date Oct 03, 2011, 870912 bytes

c:\Program Files\Firebird\Firebird_2_5\WOW64\fbclient.dll,
date Oct 03, 2011, 548864 bytes

Both were put there by the installation process.

> You may test the problem directly from your Python, simply try next:
>
> import ctypes
> fb_library = ctypes.WinDLL('/path/to/fbclient.dll')
>

I did this with both dll's, with different results:

Python 3.2.3 (default, Apr 11 2012, 07:12:16) [MSC v.1500 64 bit (AMD64)] on win
32
Type "help", "copyright", "credits" or "license" for more information.

>>> import ctypes
>>> fb_library = ctypes.WinDLL(r'c:\Program Files\Firebird\Firebird_2_5\bin\fbclient.dll')
>>> fb_library

<WinDLL 'c:\Program Files\Firebird\Firebird_2_5\bin\fbclient.dll', handle 100000
00 at 25966a0>

>>>

>>> fb_library = ctypes.WinDLL(r'c:\Program Files\Firebird\Firebird_2_5\WOW64\fbclient.dll')

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python32\lib\ctypes\__init__.py", line 353, in __init__
self._handle = _dlopen(self._name, mode)
WindowsError: [Error 193] %1 ist keine zulässige Win32-Anwendung

>>>

Translation of the Windows error: '%1 is not a valid win32-application'.

Looks like something is wrong with the dll in WOW64, but what, and what should I do? Simply remove it (but perhaps it is needed somewhere)? Uninstall and reinstall Firebird?

Thank you for your help,
Sibylle