Here is the minium not-working example which I took from the Wikigarden a few minutes ago. \def\T#1{% \startitemize[#1,joinedup] \item This is a bullet of type #1. \stopitemize } \starttext \dorecurse{9}{\T\recurselevel} \stoptext Compiling this into a pdf file with context produces an error. I've pasted the complete context typesetting run to show the error, in hopes that it will shed some light on what's wrong with my setup. I have a feeling that the stand along install is missing some vital part of the installation regarding fonts, and that it's not noticed by the majority of you since those items are still on your system from legacy versions. Regards --------- * OS: ubuntu 20.04.3 LTS * Context current version: 2021.11.13 20:36 $ context bullet-style-example-iteration.lmtx ---------------- resolvers | formats | executing runner 'run luametatex format': /opt/context-lmtx/tex/texmf-linux-64/bin/luametatex --jobname="./bullet-style-example-iteration.lmtx" --fmt=/opt/context-lmtx/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.fmt --lua=/opt/context-lmtx/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.lui --c:currentrun=1 --c:fulljobname="./bullet-style-example-iteration.lmtx" --c:input="./bullet-style-example-iteration.lmtx" --c:kindofrun=1 --c:maxnofruns=9 --c:texmfbinpath="/opt/context-lmtx/tex/texmf-linux-64/bin" system > callbacks > not registering frozen 'local_box_filter' system > system > ConTeXt ver: 2021.11.13 20:36 LMTX fmt: 2021.11.13 int: english/english system > system > 'cont-new.mkxl' loaded open source > level 1, order 1, name '/opt/context-lmtx/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > beware: some patches loaded from cont-new.mkiv close source > level 1, order 1, name '/opt/context-lmtx/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > files > jobname './bullet-style-example-iteration', input './bullet-style-example-iteration.lmtx', result './bullet-style-example-iteration' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > level 1, order 2, name './bullet-style-example-iteration.lmtx' fonts > preloading latin modern fonts (second stage) fonts > defining > font with asked name 'lmroman12-regular' is not found using lookup 'file' fonts > defining > unable to define 'lmroman12-regular' as 'modern-designsize-12pt-rm-tf-0--0' fonts > defining > forced type 'otf' of 'latinmodern-math-regular' not found fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mr--3' fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mr--2' fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mr--1' fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mb--3' fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mb--2' fonts > defining > unable to define 'latinmodern-math-regular.otf' as 'modern-designsize-12pt-mm-mb--1' fonts > 'fallback modern-designsize rm 12pt' is loaded tex error > tex error on line 9 in file ./bullet-style-example-iteration.lmtx: \textfont0 is undefined in (text) char, font id 0, character 63) <macro> \textormathchar ...ar \scratchcounter \else \ifconditional \prefermathovertextchar \setfontid \fontid \textfont \c_font_fam_mr \fi \iffontchar \font \scratchcounter \char \scratchcounter \else \normalstartimath \char \scratchcounter \normalstopimath \fi \fi \endg ... <macro> \symb_place_indeed #1->\settrue \c_symb_found \begingroup \the \everysymbol \csname \??symbol #1\endcsname \relax \endgroup <macro> \symb_place_retry #1->\ifcsname \??symbol :#1\endcsname \symb_place_indeed {:#1} \else #1\fi <macro> \currentsymbol \setfalse \c_symb_found \the \t_symb_setups \ifconditional \c_symb_found \else \symb_place_retry \currentsymbol \fi <macro> \symb_place_argument #1->\dontleavehmode \edef \currentsymbol {#1}\ifcsname \??symbol \currentsymbolset :#1\endcsname \symb_place_indeed {\currentsymbolset :#1}\else \symb_place_normal \fi <macro> \symb_place_indeed #1->\settrue \c_symb_found \begingroup \the \everysymbol \csname \??symbol #1\endcsname \relax \endgroup ... \dorecurse{9}{\T\recurselevel} 1 2 \def\T#1{% 3 \startitemize[#1,joinedup] 4 \item This is a bullet of type #1. 5 \stopitemize 6 } 7 8 \starttext 9 >> \dorecurse{9}{\T\recurselevel} 10 \stoptext "Somewhere in the math formula just ended, you used the stated character from an undefined font family. For example, plain TeX doesn't allow \it or \sl in subscripts. Proceed, and I'll try to forget that I needed that character. mtx-context | fatal error: return code: 256 "