Hi Hans, The removal of typo-spa.lua breaks the format generation in mkiv: loading > ConTeXt Typesetting Macros / Wrapping resolvers > lua > loading file '/usr/share/texmf/tex/context/base/mkiv/typo-wrp.lua' succeeded close source > level 1, order 226, name '/usr/share/texmf/tex/context/base/mkiv/typo-wrp.mkiv' open source > level 1, order 227, name '/usr/share/texmf/tex/context/base/mkiv/typo-spa.mkiv' loading > ConTeXt Typesetting Macros / Spacing resolvers > lua > unknown file 'typo-spa.lua' error loading file: typo-spa.lua (aborting)resolvers | formats | resolvers | formats | binary path : /usr/bin resolvers | formats | format path : /home/reviczky/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/formats/luatex resolvers | formats | luatex engine : luatex resolvers | formats | lua startup file : /usr/share/texmf/tex/context/base/mkiv/luat-cod.lua resolvers | formats | context file : /usr/share/texmf/tex/context/base/mkiv/cont-en.mkiv resolvers | formats | run time : 1.394 seconds resolvers | formats | return value : okay resolvers | formats | system | total runtime: 3.790 seconds Adding the file back creates the formats again. mtx-context | current version: 2020.12.04 20:19 This is LuaTeX, Version 1.13.0 (TeX Live 2021/dev/Debian) Development id: 7387 Regards, Adam