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Asked: 2026-06-17T16:04:15+00:00

I have successfully built an open source application using py2app for 10.7 Lion. However,

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I have successfully built an open source application using py2app for 10.7 Lion. However, when users try to open the application on 10.6 Snow Leopard, they get the following error:

ImportError:
dlopen(/Applications/Mnemosyne.app/Contents/Resources/lib/python2.7/lib-dynload/PyQt4/QTWebKit.so,
2): Symbol not found: _kMDItemDownloadedDate

Referenced from:
/Applications/Mnemosyne.app/Contents/MacOS/../Frameworks/libQtWebKit.4.dylib

All of my dependencies are installed using MacPorts. How can I fix this to allow Snow Leopard users to open the application as well? This application is originally linux-based, so there should be no Lion-specific code.

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1 Answer

  1. Editorial Team

    I eventually solved this by installing Snow Leopard on a separate partition on my Mac and re-installing everything in Snow Leopard, then building the application there. The Snow Leopard-built application runs fine in Snow Leopard, Lion, and Mountain Lion.

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