I need to export my document. For this I use:<br>    \setupbackend[export=yes,xhtml=yes,css=yes]<br><br>I have update my document with start and stop for chapter, section and subsection, but I have one problem. I have:<br>
\useURL<br>  [UUID]<br>  [<a href="http://en.wikipedia.org/wiki/Uuid">http://en.wikipedia.org/wiki/Uuid</a>]<br>  []<br>  [universally unique identifier]<br>and when I also have:<br>\from[UUID]<br><br>I get:<br>system          &gt; end file documentatie.tex at line 3398<br>
 )&lt;/home/cecil/ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bolditalic.otf&gt;{/home/cecil/ConTeXt/tex/texmf/fonts/enc/dvips/lm/lm-mathsy.enc}&lt;/home/cecil/ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bold.otf&gt;&lt;/home/cecil/ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-regular.otf&gt;&lt;/home/cecil/ConTeXt/tex/texmf/fonts/type1/public/lm/lmsy10.pfb&gt;<br>
backend         &gt; export &gt; finalizing<br>! LuaTeX error ...TeXt/tex/texmf-context/tex/context/base/back-exp.lua:328: bad argument #2 to &#39;write&#39; (string expected, got nil).<br><br>system          &gt; tex &gt; error on line 0 in file : LuaTeX error  ...<br>
<br>&lt;empty file&gt;<br><br>&lt;*&gt; ./documentatie.tex<br><br>So properly I need to change something. But what?<br clear="all"><br>-- <br>Cecil Westerhof<br>