Getting error "Please use setDefaultNamespace" with --pipe

Hello,

When I use  cwm --rdf 16-webarch-owl.rdf --n3 
on the attached file, there is no error.

When I use cwm --rdf 16-webarch-owl.rdf --n3 --pipe
I get the error and message indicate below.

 _ Ian

=================================================================

bash-2.05b$ cwm --rdf 16-webarch-owl.rdf --n3 --pipe
#Processed by Id: cwm.py,v 1.144 2003/09/14 20:20:20 timbl Exp
        #    using base
file:/home/ian/CVS-local/WWW/2003/10/16-webarch-owl.rdf
         
#  Notation3 generation by
#       notation3.py,v 1.147 2003/10/20 17:31:55 timbl Exp
 
#   Base was: file:/home/ian/CVS-local/WWW/2003/10/16-webarch-owl.rdf
    #RDF parsed by Id: sax2rdf.py,v 1.36 2003/08/27 15:39:16 ryanlee Exp
         @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
     @prefix owl: <http://www.w3.org/2002/07/owl#> .
     @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
     @prefix xsdt: <http://www.w3.org/2001/XMLSchema#> .
     @prefix string: <http://www.w3.org/2000/10/swap/string#> .
     @prefix webarch: <http://www.w3.org/2003/10/16-webarch-owl#> .
    Traceback (most recent call last):
  File "/home/ian/CVS-local/WWW/2000/10/swap/cwm.py", line 652, in ?
    doCommand()
  File "/home/ian/CVS-local/WWW/2000/10/swap/cwm.py", line 380, in
doCommand
    p.load(_inputURI)
  File "/home/ian/CVS-local/WWW/2000/10/swap/sax2rdf.py", line 594, in
load
    return self.loadStream(f)
  File "/home/ian/CVS-local/WWW/2000/10/swap/sax2rdf.py", line 601, in
loadStream
    self._p.parse(s)
  File "/usr/lib/python2.3/xml/sax/expatreader.py", line 107, in parse
    xmlreader.IncrementalParser.parse(self, source)
  File "/usr/lib/python2.3/xml/sax/xmlreader.py", line 123, in parse
    self.feed(buffer)
  File "/usr/lib/python2.3/xml/sax/expatreader.py", line 207, in feed
    self._parser.Parse(data, isFinal)
  File "/usr/lib/python2.3/xml/sax/expatreader.py", line 359, in
start_namespace_decl
    self._cont_handler.startPrefixMapping(prefix, uri)
  File "/home/ian/CVS-local/WWW/2000/10/swap/sax2rdf.py", line 295, in
startPrefixMapping
    self.sink.bind(prefix, uri)
  File "/home/ian/CVS-local/WWW/2000/10/swap/notation3.py", line 1125,
in bind
    raise RuntimError("Please use setDefaultNamespace instead")
NameError: global name 'RuntimError' is not defined
=============================================================
-- 
Ian Jacobs (ij@w3.org)   http://www.w3.org/People/Jacobs
Tel:                     +1 718 260-9447