[XeTeX] Xparse is broken!

[Ari Meir Brodsky]

I've updated to the most recent versions of packages from MikTeX, and xparse
seems to be broken, causing all the great features of XeLaTeX not to work.

In particular, line 59 of xparse.sty is looking for a newer version of expl3
(dated 2011/11/19 or later), but the newest expl3 is dated 2011/10/09.  Is
anyone else having this problem?

-Ari

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Ari M. Brodsky
ari.brodsky at utoronto.ca