title: ImportError: No module named cms when running Django with django-cms installed
body: <p>I had a local working django project based on django–cms. Now suddenly its not working anymore when i activate virtualenv <code>source env/bin/activate</code> and runserver <code>python manage.py runserver</code> i get <code>ImportError: No module named cms</code>.
  Here full Error message: </p>
  
  <pre><code>Traceback (most recent call last):
    File "manage.py", line 10, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
      utility.execute()
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 354, in execute
      django.setup()
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/__init__.py", line 21, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
      app_config = AppConfig.create(entry)
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/apps/config.py", line 87, in create
      module = import_module(entry)
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
      __import__(name)
  ImportError: No module named cms
  </code></pre>
  
  <p>I dont understand this because everything allways worked fine only thing i did 2 weeks ago was to put the directory where the project lives in away from my desktop to another location. 
  Anyone knows how to fix this or whats the reason for that. </p>
  
  <p>pip list:</p>
  
  <pre><code>argparse (1.3.0)
  binaryornot (0.3.0)
  cookiecutter (0.8.0)
  coverage (3.7.1)
  distribute (0.7.3)
  dj-database-url (0.3.0)
  Django (1.7.1)
  django-allauth (0.18.0)
  django-appconf (0.6)
  django-autoslug (1.7.2)
  django-avatar (2.0)
  django-braces (1.4.0)
  django-cache-url (0.8.0)
  django-classy-tags (0.4)
  django-configurations (0.8)
  django-crispy-forms (1.4.0)
  django-debug-toolbar (1.2.2)
  django-extensions (1.4.9)
  django-floppyforms (1.3.0)
  django-front (0.4.3)
  django-inplaceedit (1.3.0)
  django-model-utils (2.2)
  django-mptt (0.6.0)
  django-reversion (1.8.0)
  django-secure (1.0.1)
  django-sekizai (0.7)
  django-wymeditor (1.0)
  djangocms-admin-style (0.2.0)
  djangocms-installer (0.7.2)
  djangocms-text-ckeditor (2.0.5)
  docutils (0.12)
  html5lib (1.0b1)
  Jinja2 (2.7.3)
  MarkupSafe (0.23)
  mock (1.0.1)
  MySQL-python (1.2.5)
  oauthlib (0.7.2)
  Pillow (2.6.1)
  pip (1.5.6)
  psycopg2 (2.5.4)
  Pygments (2.0.1)
  python-openid (2.2.5)
  pytz (2013.8)
  PyYAML (3.11)
  requests (2.5.1)
  requests-oauthlib (0.4.2)
  setuptools (8.0)
  six (1.4.1)
  South (0.8.4)
  Sphinx (1.2.3)
  sqlparse (0.1.14)
  unicode-slugify (0.1.1)
  virtualenv (12.0.5)
  waitress (0.8.9)
  Werkzeug (0.9.6)
  whitenoise (1.0.6)
  wsgiref (0.1.2)
  </code></pre>