Pylons Helloworld-「予想バージョンスペックイン…」エラー

Question

このドキュメントを使用して新しいプロジェクトを開始しようとしています： http://pylonshq.com/docs/en/1.0/gettingstarted/ （Go-Pylonsをダウンロードし、Virtualenvを作成するなど）。

しかし、Helloworldアプリを開始しようとしているとき、それは次のように書かれています。

$ paster serve --reload development.ini 
Starting subprocess with file monitor
Traceback (most recent call last):
  File "/home/users/vrusinov/workspace/mydevenv/bin/paster", line 8, in <module>
    load_entry_point('PasteScript==1.7.3', 'console_scripts', 'paster')()
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 84, in run
    invoke(command, command_name, options, args[1:])
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 123, in invoke
    exit_code = runner.run(args)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 218, in run
    result = self.command()
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 276, in command
    relative_to=base, global_conf=vars)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 313, in loadapp
    **kw)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 203, in loadapp
    return loadobj(APP, uri, name=name, **kw)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 223, in loadobj
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 247, in loadcontext
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 270, in _loadconfig
    return loader.get_context(object_type, name, global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 401, in get_context
    section)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 423, in _context_from_use
    object_type, name=use, global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 353, in get_context
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 247, in loadcontext
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 277, in _loadegg
    return loader.get_context(object_type, name, global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 553, in get_context
    object_type, name=name)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 573, in find_egg_entry_point
    pkg_resources.require(self.spec)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 666, in require
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 546, in resolve
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 2436, in parse_requirements
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 2404, in scan_list
ValueError: ('Expected version spec in', 'srvbakweb/', 'at', '/')

理由は何ですか？これをデバッグする方法は？

Gentoo LinuxでPython 2.6を使用しています。また、Go-Pylonsとシステム全体のパイロンインストール用の-no-site-packagesスイッチを試してみました。同じエラー:(