[XeTeX] xparse fails

[Vafa Khalighi]

There was a similar problem reported a while ago. I do not know about xparse
internals as I do not maintain it but Joseph should know what is going on.
See also the similar issue which was reported in July:

http://tug.org/pipermail/xetex/2011-July/020840.html

On Tue, Aug 2, 2011 at 8:29 AM, Gareth Hughes <garzohugo at gmail.com> wrote:

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> Dear fellow XeTeXnicians,
>
> TeX Live updated a couple of times over the weekend, and a document that
> compiled fine on Friday now fails. The document is not complex, and now
> I see almost everything I've written is uncompilable. These documents
> use fontspec, polyglossia, soul and hyperref, but I believe that it's
> the fontspec call on xparse that creates the problem. Somewhere
> something has changed.
>
> The error message is
> > (/opt/texlive/2009/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
> > ! Undefined control sequence. <argument> \ExplFileName
> >
> > l.57 ...e}{\ExplFileVersion}{\ExplFileDescription}
>
> My XeTeX version is
> > This is XeTeX, Version 3.1415926-2.3-0.9997.5 (TeX Live 2011)
> > (format=xelatex 2011.7.20)  1 AUG 2011 23:18
>
> The TLM tells me that I'm using revision 22347 (ver. SVN 2321) of
> xpackages.
>
> Is anyone else experiencing problems? Can anyone sort this out for me?
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