Unfortunately the faust-0.9.9.4.tar.gz initially uploaded to sourceforge was outdated. it should *not* be used. A new up to date version, named faust-0.9.9.4b.tar.gz, has been uploaded in replacement of the previous one.So please make sure that you are using the new faust-0.9.9.4b.tar.gz. Sorry for the inconvenience ! Yann