/usr/lib/python2.7/dist-packages/pkg_resources.py:1031: UserWarning: /home/vivek/.python-eggs is writable by group/others and vulnerable to attack when used with get_resource_filename. Consider a more secure location (set with .set_extraction_path or the PYTHON_EGG_CACHE environment variable).
  warnings.warn(msg, UserWarning)
Traceback (most recent call last):
  File "bin/trytond", line 17, in <module>
    from trytond.application import app
  File "/home/vivek/gsoc16/latest/trytond/trytond/application.py", line 8, in <module>
    Pool.start()
  File "/home/vivek/gsoc16/latest/trytond/trytond/pool.py", line 97, in start
    register_classes()
  File "/home/vivek/gsoc16/latest/trytond/trytond/modules/__init__.py", line 355, in register_classes
    mod_file, pathname, description)
  File "/usr/local/lib/python2.7/dist-packages/trytond/modules/company/__init__.py", line 5, in <module>
    from .company import *
  File "/usr/local/lib/python2.7/dist-packages/trytond/modules/company/company.py", line 10, in <module>
    from trytond.backend.database import CursorInterface
ImportError: cannot import name CursorInterface