> Mohammad Hossein Bateni <mailto:bateni@gmail.com>
> 21. August 2016 um 12:53
> Hello,
>
> The code snippet at the end used to work a few months ago when I 
> reported a rendering bug.  But now the font does not load and I see 
> the following error.  (It's not an issue with simplefonts because 
> \definedfont[KFGQPCUthmanTahaNaskh*arabic] does not work either.  the 
> font is published here 
> <http://fonts.qurancomplex.gov.sa/wp-content/uploads/2012/06/UthmanTN1-Ver10.zip>.
Remake the format (context --make en) or delete the font entries 
(uthmantn1-ver10.tma|tmc) in the cache 
($TEXMF/texmf-cache/luatex-cache/context/<HASH>/fonts/otl/). Please try 
both suggestions and report which of them helped.

BTW: The simplefonts module has been replaced with the \definefontfamily 
command (different syntax but included in the core).

%%%% begin example
\definefontfamily[testfont][rm][KFGQPC Uthman Taha Naskh][features=arabic]

\setupbodyfont[testfont]

\starttext
...
\stoptext
%%%% end example

Wolfgang