I had a WinSxS issue with the PIL (Python Imaging Library) PIL-1.1.7 Windows
installer, and at first I thought it was a PyInstaller issue. Since PIL is a
commonly-used library, some of you might also encounter this. So I will mention
this issue for here posterity, as it took a while to debug.
My executable generated by PyInstaller generated this error when run, on
Windows 7:
"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."
It turns out that the PIL-1.1.7 Windows installers (from effbot.org) for at
least Python 2.6 and 2.7 incorrectly contain a manifest that references a
Windows debug library. Specifically, _imagingft.pyd contains this:
<dependency>
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.VC90.DebugCRT"
version="9.0.21022.8" processorArchitecture="x86"
publicKeyToken="1fc8b3b9a1e18e3b"></assemblyIdentity>
</dependentAssembly>
</dependency>
That's wrong: it should only have release-version VC90 libraries. I don't have
the Debug libraries installed; I don't know if you wouldn't see this problem if
you did have them installed.
The workarounds are to build PIL yourself, revert to PIL-1.1.6, or edit the
.pyd file with a binary file editor and comment out the bad dependency (e.g.,
replace it with spaces or turn the tags into XML comment tags).
This was reported to and acknowledged by the PIL author about a year ago, but
he has not yet fixed the installers. See
https://bitbucket.org/effbot/pil-117/issue/1/windows-build-of-_imagingft-module-fails
Google for << _imagingft.pyd DebugCRT >> for other commentary.
I used sxstrace.exe to debug this, but it doesn't narrow down the problem to a
specific manifest: it reports a VC90.DebugCRT issue. I had to grep through all
the libraries PyInstaller gathered up to find the problem one.
Dan
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