Hi Derek - X11 on MacOsX is effectively broken w.r.t. EMBOSS. You could try installing Xfree86 4.3, or waiting for Panther ;) r -- Richard P. Grant http://www2.mrc-lmb.cam.ac.uk/personal/rpg/ MRC-LMB, Cambridge, UK PGP: 0x5F9559B1 weblog: http://www.rg-d.com/BioLOG/