Here is the related info:

system : module simplefonts loaded

(C:/texlive/2010/texmf-dist/tex/context/third/simplefonts/t-simplefonts.tex

loading : ConTeXt User Module / Simplefonts

! LuaTeX error <main ctx instance>:1: unexpected symbol near ')'.

<argument> ....loadluafile("t-simplefonts",\par )}

\secondoftwoarguments #1#2->#2

l.144

?