I'm getting an stack trace trying to import with:
```
edxapp@precise64:~/edx-platform$ /edx/app/edxapp/venvs/edxapp/bin/python manage.py cms --settings=aws import /vagrant/courses 21w-789x --nostatic
2014-05-01 15:17:59,941 INFO 7795 [dd.dogapi] dog_stats_api.py:66 - Initializing dog api to use statsd: localhost, 8125
Importing.  Data_dir=/vagrant/courses, course_dirs=('21w-789x',)
Traceback (most recent call last):
  File "manage.py", line 95, in <module>
    execute_from_command_line([sys.argv[0]] + django_args)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/edx/app/edxapp/edx-platform/cms/djangoapps/contentstore/management/commands/import.py", line 51, in handle
    create_new_course=True,
TypeError: import_from_xml() got an unexpected keyword argument 'create_new_course'
```