Traceback (most recent call last):
  File "bin/trytond", line 80, in <module>
    server.TrytonServer(options).run()
  File "/home/vivek/gsoc16/trytond/trytond/server.py", line 84, in run
    with Transaction().start(db_name, 0) as transaction:
  File "/home/vivek/gsoc16/trytond/trytond/transaction.py", line 75, in start
    Database = backend.get('Database')
  File "/home/vivek/gsoc16/trytond/trytond/backend/__init__.py", line 30, in get
    ep, = pkg_resources.iter_entry_points('trytond.backend', db_type)
ValueError: need more than 0 values to unpack