why is escaped-ident-004.xht invalid?

From: Dan Connolly <connolly@w3.org>
Date: Wed, 26 May 2010 16:55:35 -0500
To: public-css-testsuite <public-css-testsuite@w3.org>
Message-ID: <1274910935.3925.15418.camel@pav>

I can't see why the invalid flag is set on this one; help?
http://www.w3.org/Style/CSS/Test/CSS2.1/20100316/xhtml1/escaped-ident-004.xht

-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
gpg D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E

Received on Wednesday, 26 May 2010 21:53:52 UTC