launchpadbugs.exceptions.LaunchpadURLError in _safe_urlopen

Python 2.5.2 (r252:60911, May 7 2008, 15:21:12)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import launchpadbugs.connector as Connector
>>> Bug = Connector.ConnectBug(method="Text")
>>> print Bug(int(257313)).infotable
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/site-packages/launchpadbugs/lphelper.py", line 261, in <lambda>
    if fget : fget = lambda s, n=fget.__name__ : getattr(s, n)()
  File "/usr/lib/python2.5/site-packages/launchpadbugs/text_bug.py", line 230, in get_infotable
    return self.__textpage["task"]
  File "/usr/lib/python2.5/site-packages/launchpadbugs/text_bug.py", line 150, in __getitem__
    self.parse()
  File "/usr/lib/python2.5/site-packages/launchpadbugs/text_bug.py", line 154, in parse
    text = self.__connection.get(self.__url).text
  File "/usr/lib/python2.5/site-packages/launchpadbugs/http_connection.py", line 169, in get
    return self._safe_urlopen(url, None, False)
  File "/usr/lib/python2.5/site-packages/launchpadbugs/http_connection.py", line 291, in _safe_urlopen
    raise exceptions.choose_LaunchpadError(error, url)
launchpadbugs.exceptions.LaunchpadURLError:
    * message: 400
    * url: https://launchpad.net/bugs/257313/+text
>>>

This is with pylpbugs 0.2.33~ppa4