Just installed today's update (ConTeXt ver: 2023.02.06 17:58 LMTX) and tried out the 3 fonts mentioned. \setupbodyfont[iwona] % \setupbodyfont[kurier] % \setupbodyfont[antykwa] \starttext Some text \stoptext I did a ./install.sh update with no obvious errors and afterwards Kurier and Antykwa worked for me on the above MWE but Iwona failed with the log entry: [snip] luatex warning > font: lua-loaded font '21' with name 'ex-iwonar' has no characters fonts > virtual math > the mapping is incomplete for 'iwonamath' at 7pt tex error > tex error on line 1 in file ./tt.tex: lua error: registered function call [1154]: ...-64/tex/texmf-context/tex/context/base/mkxl/math-vfu.lmt:677: attempt to index a nil value (local 'fci') stack traceback: ...-64/tex/texmf-context/tex/context/base/mkxl/math-vfu.lmt:677: in upvalue 'virtualize' ...-64/tex/texmf-context/tex/context/base/mkxl/math-vfu.lmt:1014: in function <...-64/tex/texmf-context/tex/context/base/mkxl/math-vfu.lmt:725> (...tail calls...) ...-64/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:485: in field 'read' ...-64/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1377: in function <...-64/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1234> (...tail calls...) [snip] Not sure if that's to do with my setup or true for everyone. I've never used those fonts before if that makes a difference. — Bruce Horrocks Hampshire, UK