[plt-scheme] Unexpected exception in read-xml

The snippet below raises this expression:

  read-xml: lex-error: at position 29.28/879: expected name, received
#\space

Is that intended?

(require (lib "url.ss" "net")
         (lib "xml.ss" "xml"))

(read-xml (get-pure-port
           (string->url "http://www.ticalc.org/mynetscape.xml")))


--
Jens Axel Søgaard