Hi Wolfgang, \definesimplefont fails in the latest beta. Minimal example: \usemodule [simplefonts][size=10pt] \setmainfont[Fontin][expansion=quality,protrusion=quality] \definesimplefont [NameFont] [FontinBold][size=16pt] \starttext \NameFont A \stoptext ... gives <+ /opt/context-minimals/texmf-context/tex/context/third/simplefonts/t-simplefonts.lua>) ! LuaTeX error <main ctx instance>:1: attempt to index field 'define' (a nil value) stack traceback: <main ctx instance>:1: in main chunk. system > error on line 5 in file test.tex: LuaTeX error ... 1 \usemodule [simplefonts][size=10pt] 2 3 \setmainfont[Fontin][expansion=quality,protrusion=quality] 4 5 >> \definesimplefont [NameFont] [FontinBold][size=16pt] 6 7 \starttext 8 \NameFont A 9 \stoptext \dodefinesimplefont ...1("\luaescapestring {#2}")} \ifcase \scaledfontmode \r... l.5 ...efont [NameFont] [FontinBold][size=16pt] Any ideas? Thanks, Aditya