(Running 2023.09.18 17:40 on Windows 11 x64)

With

\setupbodyfont[libertinus,11pt]
\starttext
Hello
\stoptext

I get no text output in the pdf and the following error reports:

fonts           > otf loading > loading 'G:/ConTeXt_LMTX/tex/texmf/fonts/data/public/libertinus/LibertinusSerif-Regular.otf', hash 'libertinusserif-regular'
otf reader      > fatal error in file 'G:/ConTeXt_LMTX/tex/texmf/fonts/data/public/libertinus/LibertinusSerif-Regular.otf': ...MTX/tex/texmf-context/tex/context/base/mkxl/font-dsp.lmt:2160: attempt to perform arithmetic on a nil value (global 'markset')
stack traceback:
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2344: in metamethod 'add'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-dsp.lmt:2160: in upvalue 'readlookups'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-dsp.lmt:2570: in upvalue 'readscripts'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-dsp.lmt:2662: in local 'reader'
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2089: in upvalue 'readtable'
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2217: in upvalue 'readdata'
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2257: in function <...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2240>
    [C]: in function 'xpcall'
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2346: in upvalue 'loadfont'
    ...MTX/tex/texmf-context/tex/context/base/mkiv/font-otr.lua:2401: in field 'loadfont'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:160: in field 'load'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:625: in upvalue 'otftotfm'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:653: in function <...MTX/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:652>
    (...tail calls...)
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:374: in function <...MTX/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:350>
    (...tail calls...)
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:465: in field 'read'
    ...MTX/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1375: in function <...MTX/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1232>
    (...tail calls...)
fonts           > otf loading > loading failed due to read error

--
Rik