Dear List, i hope somone can help me. This litte example is from the wiki, i wanted to try \placeformula \placeformula[formula:aformula] \startformula y=x^2 \stopformula \placeformula \startformula \int_0^1 x^2 dx \stopformula After compiling there is no PDF Page . But this: Command Line: context.exe --synctex=-1 "mathtry.tex" Startup Folder: C:\Users\Administrator\Downloads\cont-tmf\doc\context\sources\general\magazines resolvers | formats | executing runner 'run luametatex format': luametatex --jobname="./mathtry.tex" --socket --shell-escape --fmt=C:/texlive/2023/texmf-var/luametatex-cache/context/1b4da46d1f340757f9984eae810b1464/formats/luametatex/cont-en.fmt --lua=C:/texlive/2023/texmf-var/luametatex-cache/context/1b4da46d1f340757f9984eae810b1464/formats/luametatex/cont-en.lui --c:currentrun=1 --c:fulljobname="./mathtry.tex" --c:input="./mathtry.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:synctex="-1" --c:texmfbinpath="C:/texlive/2023/bin/windows" system > system > ConTeXt ver: 2023.05.05 18:36 LMTX fmt: 2023.6.1 int: english/english system > system > 'cont-new.mkxl' loaded open source > level 1, order 1, name 'C:/texlive/2023/texmf-dist/tex/context/base/mkxl/cont-new.mkxl' system > beware: some patches loaded from cont-new.mkiv close source > level 1, order 1, name 'C:/texlive/2023/texmf-dist/tex/context/base/mkxl/cont-new.mkxl' system > 'cont-sys.mkxl' loaded open source > level 1, order 2, name 'C:/texlive/2023/texmf-dist/tex/context/texlive/cont-sys.mkxl' close source > level 1, order 2, name 'C:/texlive/2023/texmf-dist/tex/context/texlive/cont-sys.mkxl' system > files > jobname './mathtry', input './mathtry.tex', result './mathtry' fonts > latin modern fonts are not preloaded languages > language 'en' is active system > synctex functionality is enabled, expect 5-10 pct runtime overhead! open source > level 1, order 3, name './mathtry.tex' fonts > beware: no fonts are loaded yet, using 'lm mono' in box tex error > tex error on line 4 in file ./mathtry.tex: \textfont0 is undefined in ordinal, font id 0, character 63) <macro> \endgroup \Ustopmathmode <macro> \stopforceddisplaymath \egroup \ifcase \c_strc_formulas_frame_mode \else \strc_math_number_check_offsets \fi \ifcase \c_strc_formulas_frame_mode \strc_math_number_check \or \strc_math_number_check_outside \else \strc_math_number_check_inside \fi \str <macro> \endgroup \strc_formulas_endstrut \stopinnermath \afterdisplayspace \egroup <macro> \p_threshold \strc_formulas_place_number \strc_formulas_flush_number \dostarttagged \t!formulacontent \empty \dotagregisterformula \c_strc_formulas_n \csname \e!stop \formulaparameter \c!alternative \v!formula \endcsname \dostoptagged \dostoptagged \nonoindentati \stopformula 1 \placeformula[formula:aformula] 2 \startformula 3 y=x^2 4 >> \stopformula 5 \placeformula 6 \startformula 7 \int_0^1 x^2 dx 8 \stopformula 9 10 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: 1 Many regards Uschi Hermann _____________________________________________________________________ ConTeXt Compilation Report (Pages: 0) Errors: 0 Warnings: 0 Bad Boxes: 0