dh_scour stops builds on Natty

When building some packages, if dh_scour encounters a problem, it stops the package build, which I've been told it shouldn't. It fails, in those packages, always with the same error:

scour 0.25
Copyright Jeff Schiller, Louis Simard, 2010
Traceback (most recent call last):
  File "/usr/bin/scour", line 2933, in <module>
    out_string = scourString(in_string, options).encode("UTF-8")
  File "/usr/bin/scour", line 2588, in scourString
    doc = xml.dom.minidom.parseString(in_string)
  File "/usr/lib/python2.6/xml/dom/minidom.py", line 1928, in parseString
    return expatbuilder.parseString(string)
  File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 940, in parseString
    return builder.parseString(string)
  File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 223, in parseString
    parser.Parse(string, True)
  File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 354, in first_element_handler
    self.start_element_handler(name, attributes)
  File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 779, in start_element_handler
    uri, localname, prefix, qname = _parse_ns_name(self, aname)
  File "/usr/lib/python2.6/xml/dom/expatbuilder.py", line 127, in _parse_ns_name
    uri, localname = parts
ValueError: too many values to unpack
dh_scour: scour -i gnome-cpu-frequency-applet.svg -o gnome-cpu-frequency-applet.svg.opt returned exit code 1
make: *** [binary-makedeb-IMPL/gnome-applets-data] Error 9
dpkg-buildpackage: error: fakeroot debian/rules binary gave error exit status 2
debuild: fatal error at line 1337:
dpkg-buildpackage -rfakeroot -D -us -uc -b failed
bzr: ERROR: The build failed.