title: Django: ImportError: No module named social.apps.django_app
body: <p>I had an application that I created in Windows 7, and it worked perfectly. A few days back, I migrated to Ubuntu and copied the project file in Ubuntu. Now, when I try running the project using <code>python manage.py runserver</code>, I get the following error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "manage.py", line 10, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
      utility.execute()
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 312, in execute
      django.setup()
    File "/usr/local/lib/python2.7/dist-packages/django/__init__.py", line 18, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py", line 85, in populate
      app_config = AppConfig.create(entry)
    File "/usr/local/lib/python2.7/dist-packages/django/apps/config.py", line 112, in create
      mod = import_module(mod_path)
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
      __import__(name)
  ImportError: No module named social.apps.django_app
  </code></pre>
  
  <p>What seems to be wrong here? I'm new to Ubuntu, so any help would be appreciated. I have the same version of Python and Django installed in Ubuntu that I had in Windows as well.</p>