I am trying to build some installers of numpy using setuptools and bdist_mpkg on Leopard using the following command: python setupegg.py config_fc --fcompiler gnu95 config -L../staticlibs build bdist_mpkg --open However, I get the following error towards the end of the build: Copying numpy.egg-info to build/bdist.macosx-10.3-i386/mpkg/ platlib/Library/Python/2.5/site-packages/numpy-1.0.5.dev4464-py2.5.egg-info running install_scripts error: cannot copy tree 'build/scripts.macosx-10.3-i386-2.5': not a directory This is a confusing error, since there is a "build/scripts.macosx-10.3-i386-2.5" and it is certainly a directory.