python manage.py runserver失败

我想跟随着你学姜戈 this tutorial . 我使用的是django 1.1.1版

我跑

django-admin.py startproject mysite

它会创建它应该创建的文件。然后我尝试通过运行

python manage.py runserver

但这里是我得到以下错误的地方。

Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 362, in execute_manager
    utility.execute()
  File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 303, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 195, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 213, in execute
    translation.activate('en-us')
  File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 73, in activate
    return real_activate(language)
  File "/Library/Python/2.6/site-packages/django/utils/translation/__init__.py", line 43, in delayed_loader
    return g['real_%s' % caller](*args, **kwargs)
  File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 205, in activate
    _active[currentThread()] = translation(language)
  File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 194, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "/Library/Python/2.6/site-packages/django/utils/translation/trans_real.py", line 172, in _fetch
    for localepath in settings.LOCALE_PATHS:
  File "/Library/Python/2.6/site-packages/django/utils/functional.py", line 273, in __getattr__
    return getattr(self._wrapped, name)
AttributeError: 'Settings' object has no attribute 'LOCALE_PATHS'

现在,我可以添加一个locale_path属性,并将其设置为settings.py文件中的一个空元组,但它只会抱怨另一个设置等等。我这里缺什么?