How to build sugar on fedora 16

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Hi,

I am trying to build sugar as instruction here. When I issue "./sugar-jhbuild update" I get the following error. My system is fedora 16 (64 bit).

./sugar-jhbuild update
Updating sugar-jhbuild...
Already up-to-date.
Updating upstream jhbuild...
Already up-to-date.
Warning: unknown distro version, automatic fallback to rawhide.
Traceback (most recent call last):
  File "./sugar-jhbuild", line 62, in <module>
    sys.exit(main.main(base_dir, sys.argv[1:]))
  File "/home/kalpa/sugar-jhbuild/sjhbuild/main.py", line 111, in main
    rc = jhbuild.commands.run(command, config, args, help=lambda: jhbuild.main.print_help(parser))
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/commands/__init__.py", line 123, in run
    return cmd.execute(config, args, help)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/commands/__init__.py", line 52, in execute
    return self.run(config, options, args, help)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/commands/base.py", line 63, in run
    module_set = jhbuild.moduleset.load(config)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/moduleset.py", line 316, in load
    ms.modules.update(_parse_module_set(config, uri).modules)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/moduleset.py", line 412, in _parse_module_set
    inc_moduleset = _parse_module_set(config, inc_uri)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/moduleset.py", line 427, in _parse_module_set
    repositories, default_repo)
  File "/home/kalpa/.local/lib/python2.7/site-packages/jhbuild/modtypes/__init__.py", line 58, in parse_xml_node
    return parser(node, config, uri, repositories, default_repo)
  File "/home/kalpa/sugar-jhbuild/sjhbuild/bundlemodule.py", line 50, in parse_bundle
    instance = BundleModule.parse_from_xml(node, config, uri, repositories, default_repo)
AttributeError: type object 'BundleModule' has no attribute 'parse_from_xml'

This works fine in another machine with fedora 16 (64 bit). I'm unable to figure the error.

The files and folder structure is here

Any help is highly appreciated.