KeyError 'FileImagePlugin'

[mukulrawat1986]

I am new to Django and Djangocms, I followed the instructions for manual installation and did a pip install and added the apps to INSTALLED_APPS, but on running runserver I am getting this error

KeyError at /en/
'FilerImagePlugin'
Request Method: GET
Request URL: http://127.0.0.1:8000/en/
Django Version: 1.6.5
Exception Type: KeyError
Exception Value:
'FilerImagePlugin'
Exception Location: /home/mukul/virtualenvs/stacowiki/local/lib/python2.7/site-packages/cms/plugin_pool.py in get_plugin, line 241
Python Executable: /home/mukul/virtualenvs/stacowiki/bin/python
Python Version: 2.7.6
Python Path:
['/home/mukul/Workspace/Projects/stacowiki',
'/home/mukul/virtualenvs/stacowiki/lib/python2.7',
'/home/mukul/virtualenvs/stacowiki/lib/python2.7/plat-x86_64-linux-gnu',
'/home/mukul/virtualenvs/stacowiki/lib/python2.7/lib-tk',
'/home/mukul/virtualenvs/stacowiki/lib/python2.7/lib-old',
'/home/mukul/virtualenvs/stacowiki/lib/python2.7/lib-dynload',
'/usr/lib/python2.7',
'/usr/lib/python2.7/plat-x86_64-linux-gnu',
'/usr/lib/python2.7/lib-tk',
'/home/mukul/virtualenvs/stacowiki/local/lib/python2.7/site-packages']

can anyone point me to where I am going wrong?