I had this error for a very long time when trying to use extensions in Inkscape 0.46 for Mac OS X: “The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension” After many hours of trying to find a solution I got it to work. This is what I did: sudo easy_install lxml cd /Applications/Inkscape.app/Contents/Resources/lib mv libxml2.2.dylib libxml2.2.dylib.old ln -s /u

