Roland, I forgot two things so I should better mention some before you ask. First: welcome to the ConTeXt community. Second: you need a *recent enough* ConTeXt (anything between october 07-january 08), but if you take the latest one, then you also need the future version of LM :) And you need a recent version of XeTeX & xdvipdfmx. If you're using TeX Live's version, then: a) update XeTeX binaries compile it from sources or take it from here (you can download it manually from http or using rsync) and replace the old binaries with these ones: http://minimals.contextgarden.net/current/bin/xetex/osx-intel/bin/ or rsync -av rsync://contextgarden.net/minimals/current/bin/xetex/osx-intel/bin/ path-to-bins b) update ConTeXt many other ways to do it as well (you can take a zip from pragma) For example: rsync -av rsync://contextgarden.net/minimals/current/context/2008.01.16/ path-to-texmf-tree-with-context you may replace 2008.01.16 with any version that you find here: http://minimals.contextgarden.net/current/context/ 2008.01.16 requres new LM fonts already, older versions do not. c) update LM if you take too recent ConTeXt (otherwise, leave the fonts alone) - these fonts are still a pre-release version, so you should better take an older version of ConTeXt rsync -av rsync://contextgarden.net/minimals/current/fonts/new/fonts/opentype/public/lm/ path-to-LM Mojca