The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml
libxml2 liburutegiaren lxml bildukia behar du inkex.py-ek, eta ondorioz baita hedapen honek ere. Deskargatu eta instalatu ezazu azkenengo bertsioa honako gunetik: http://cheeseshop.python.org/pypi/lxml/, edo instalatu ezazu pakete-kudeatzailea erabiliz, honako komandoaren antzeko batekin: sudo apt-get install python-lxml