Thanks to Otared and Dick Koch, I now have MKII up and running again. The primary change in TeXshop involved setting the path in Preferences/Engine to /Applications/ConTeXtMinimals/tex/texmf-osx-64/bin. for the MKII engine, Otared suggested #!/bin/bash source /Applications/ConTeXtMinimals/tex/setuptex texexec "$1" What would be best for the MKIV and XeTeX engines? Right now I have, MKIV #!/bin/bash export PATH=/Applications/ConTeXtMinimals/tex/texmf-osx-64l/bin:$PATH export TEXMFCACHE=/Applications/ConTeXtMinimals/tex/texmf-cache context "$1" XeTeX #!/bin/bash export PATH=/Applications/ConTeXtMinimals/tex/texmf-osx-64/bin:$PATH texexec --xtx "$1" Alan