using cygwin on Windows Server 2003. I'm able to use s3cmd through cygwin on Windows 7 Professional

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    An unexpected error has occurred.
  Please report the following lines to:
   s3tools-bugs@lists.sourceforge.net
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Problem: ParseError: reference to invalid character number: line 2, column 258
S3cmd:   1.5.0-alpha1

Traceback (most recent call last):
  File "/usr/bin/s3cmd", line 2037, in <module>
    main()
  File "/usr/bin/s3cmd", line 1978, in main
    cmd_func(args)
  File "/usr/bin/s3cmd", line 321, in cmd_object_put
    response = s3.object_put(full_name, uri_final, extra_headers, extra_label = seq_label)
  File "/usr/lib/python2.7/site-packages/S3/S3.py", line 452, in object_put
    response = self.send_file(request, file, labels)
  File "/usr/lib/python2.7/site-packages/S3/S3.py", line 809, in send_file
    err = S3Error(response)
  File "/usr/lib/python2.7/site-packages/S3/Exceptions.py", line 48, in __init__
    tree = getTreeFromXml(response["data"])
  File "/usr/lib/python2.7/site-packages/S3/Utils.py", line 72, in getTreeFromXml
    tree = ET.fromstring(xml)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1301, in XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1643, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1507, in _raiseerror
    raise err
ParseError: reference to invalid character number: line 2, column 258

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    An unexpected error has occurred.
    Please report the above lines to:
   s3tools-bugs@lists.sourceforge.net
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!