My attempt to update my ConTeXtMinimals using ./first-setup.sh failed.  
The message reported was:

mkiv lua stats : loaded fonts              - none
! LuaTeX error ...mals/tex/texmf-context/tex/context/base/luat-tex.lua: 
322: attempt to perform arithmetic on local 'total' (a nil value).
<*> ...texmf-context/tex/context/base/cont-nl.tex
                                                   \dump
?

Alan