Hi, I just made a binary package of GridFlow 0.9.6 for Mac OS >= 10.4 (Intel): http://gridflow.ca/download/packages/gridflow-0.9.6-macosx104-i386.tar.gz It should work well Pd-extended >= 0.41.4, as the rewritten GEM support doesn't use GEM's headers anymore. Thanks to Hans for the easier install instructions. Patrick