Re: [Matplotlib-users] DLL Load failure for matploltlib._png

[Christoph G. <cg...@uc...>]

On 3/7/2013 8:39 AM, Christoph Gohlke wrote:
> On 3/7/2013 6:00 AM, Tejashri Kandolkar wrote:
>> Hi,
>>
>> I built matplotlib1.2.0 with python3.2 on Windows7 from source.
>> I built the libpng and freetype libs and linked them statically to
>> matplotlib.
>>
>> Everything works fine on my machine, I can run the matplotlib examples etc
>> But on a new Win7 machine(with the exact same configuration as mine,
>> except a few softwares), I get the following error when i try to import
>> png module like this:
>>
>> import matplotlib._png
>>
>> ImportError: DLL load failed: The application has failed to start
>> because its side-by-side configuration is incorrect. Please see the
>> application event log or use the command-line sxstrace.exe tool for more
>> detail.
>>
>>
>> I used the dependency walker and found that pyd_ DLL was indeed having
>> issues during load.
>>
>> What could be the reason. Surprisingly it works all fine on my machine.
>>
>>
>> Regards,
>> Tej
>>
>
> Assuming this is 32 bit Python, install the Microsoft Visual C++ 2008
> Redistributable Package (x86) <from
> http://www.microsoft.com/en-us/download/details.aspx?id=29>
>

Besides that, look for extra msvcp90.dll or msvcr90.dll files in PATH 
(for example MikteX is known for that) and resolve conflicts.

Christoph