My efforts to download/install the latest minimals was stopped with this error message:
! LuaTeX error .../ConTeXt/tex/texmf-context/tex/context/base/font-otn.lua:260: attempt to index field 'steppers' (a nil value)
stack traceback:
.../ConTeXt/tex/texmf-context/tex/context/base/font-otn.lua:260: in function 'code'
.../ConTeXt/tex/texmf-context/tex/context/base/util-lua.lua:81: in function 'loadedluacode'
.../ConTeXt/tex/texmf-context/tex/context/base/luat-env.lua:94: in function 'luafilechunk'
.../ConTeXt/tex/texmf-context/tex/context/base/luat-cod.lua:45: in function 'registercode'
[string "\directlua "]:1: in main chunk.
log
system > tex > error on line 41 in file /Applications/ConTeXt/tex/texmf-context/tex/context/base/font-lib.mkvi: LuaTeX error ...
\registerctxluafile ...ua.registercode("#1","#2")}
l.41 \registerctxluafile{font-otn}{1.001}
% otf main node