Hi, I fail to create a format with luatex. I followed Hans' instructions¹ from TUG 2009. Example: % file fmt-plain.tex \input plain \directlua {tex.enableprimitives('', tex.extraprimitives())} \pdfoutput=1 \everyjob \expandafter {% \the\everyjob \input luatex-basics\relax \input luatex-fonts\relax \input luatex-mplib\relax } \edef\fmtversion{\fmtversion+luatex} The format generation stops with a star (*). $ luatex --ini fmt-plain.tex This is LuaTeX, Version beta-0.70.1-2011051918 (rev 4277) (INITEX) \write18 enabled. (./fmt-plain.tex (/home/marco/bin/context-beta/tex/texmf/tex/plain/base/plain.tex Preloading the plain format: codes, registers, parameters, fonts, more fonts, macros, math definitions, output routines, hyphenation (/home/marco/bin/context-beta/tex/texmf/tex/generic/hyphen/hyphen.tex))) * Any help appreciated. Regards Marco Patzer [1] http://www.luatex.org/talks/print-plain-tug-2009.pdf