[Image-SIG] Help with PIL on 64 bit Windows 7 and Maya

Christoph Gohlke cgohlke at uci.edu
Thu Aug 18 03:03:17 CEST 2011

Dear Andrew,

apparently the new version of Maya includes a custom version of Python, 
which is built with the Visual Studio 2010 compiler (version 16) and the 
MSVCR10 C runtime library. The standard CPython 2.6 distribution, and 
almost all existing extension package binaries, use the Visual Studio 
2008 compiler and the MSVCR90 C runtime library.

The correct solution would be to build PIL with the Visual Studio 2010 
compiler and link against the custom python26.lib from Maya.

As a workaround you could try to provide an external msvcr90 manifest 
file for the existing PIL pyd extensions. This might not work correctly 
because the use of different C runtime libraries in one process can 
cause crashes or memory corruptions.


On 8/17/2011 6:24 AM, Andrew_Seymour at scee.net wrote:
> Hi,
> I've integrated PIL into some of our tools for Maya. In particular I use
> it to create 16bit TIFFs.
> In Maya 2010 64 bit which I believe uses Python 2.6.1 everything worked
> fine. I got compiled versions of PIL from:
> http://www.lfd.uci.edu/~gohlke/pythonlibs/
> <http://www.lfd.uci.edu/~gohlke/pythonlibs/>
> which worked great.
> I'm now preparing to move to the latest version of 64bit Maya which I
> believe uses Python 2.6.4.
> I'm having problems with importing the _imaging module.
> With the path added to the system path I first got this error:
> # Error: ImportError: file <maya console> line 7: DLL load failed: The
> specified module could not be found. #
> I then used dependency walker to try and find out what was missing. I
> then tried to include a 64 bit version of msvcr90.dll in the PIL directory.
> This resulted in the following error:
> # Error: ImportError: file <maya console> line 1: DLL load failed: A
> dynamic link library (DLL) initialization routine failed. #
> Windows Error:
> Microsoft Visual C++ Runtime Errror!
> R6034
> An application has made an attempt to load the C runtime library
> incorrectly.
> Please contact the application's support team for more information.
> Looking a little deeper PIL worked fine in 64 bit with Python 2.6.4 that
> I installed for windows from the python site:
> Installed: *Python 2.6.4 (r264:75708, Oct 26 2009, 07:36:50) [MSC v.1500
> 64 bit (AMD64)] on win32*
> But, with Maya the compiled python included looks slightly different:
> Maya: *Python 2.6.4 (r264:75706, May 19 2011, 13:53:43) [MSC v.1600 64
> bit (AMD64)] on win32*
> Would this be the reason behind the issues, and if so is there a process
> I can follow to fix it?
> I personally don't have the know how or software to compile PIL locally
> as I am a Technical Artist and not a fully blown programmer, so any help
> would be greatly appreciated.
> Can you help or advise?
> Andrew Seymour
> Principal Technical Artist
> Sony Computer Entertainment Europe Limited
> http://eu.playstation.com <http://eu.playstation.com/>
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