For typesetting a context module I did the following, first making a .ted file and then typesetting it: texmfstart ctxtools --documentation --type=pdf char-utf.tex texmfstart texexec --silent --pdf --autopdf However I got an unknown format cont-nl.fmt. Why is nl chosen? What I am doing wrong here? I always use cont-en.fmt and have my MacOSX preference language set to english. How can I change the obvious default behaviour from nl to en? 127 ~/TeX/test: texmfstart ctxtools --documentation --type=pdf char- utf.tex CtxTools | input file : char-utf.tex CtxTools | output file : char-utf.ted CtxTools | filetype : pdf CtxTools | documentation sections : 5 CtxTools | definition sections : 6 CtxTools | skipped sections : 0 128 ~/TeX/test: texmfstart texexec --silent --pdf --autopdf char-utf.ted TeXExec | processing document 'char-utf.ted' TeXExec | no ctx file found TeXExec | tex processing method: context TeXExec | TeX run 1 TeXExec | writing option file char-utf.top TeXExec | using randomseed 772 TeXExec | tex engine: pdftex TeXExec | tex format: cont-nl This is pdfTeXk, Version 3.141592-1.40.7 (Web2C 7.5.6) \write18 enabled. %&-line parsing enabled. (/usr/local/texlive/texmf-context/web2c/natural.tcx) kpathsea: Running mktexfmt cont-nl.fmt fmtutil: format directory `/usr/local/texlive/2007/texmf/web2c' is not writable. I can't find the format file `cont-nl.fmt'! TeXExec | runtime: 2.008775 Hans van der Meer