error

Source configuration:
Your bot needs to connect to an IM service (in Ibid terminology, a source) like
an IRC server or jabber account. Please enter the details for the primary
source.
Note: This setup script currently only supports IRC and jabber. You can set up
other sources manually in ibid.ini.

The source name should be the IRC network name or a generic description for the
source like 'jabber'.

Source name (e.g. freenode, jabber): freenode
Source type (irc, jabber) [Default: irc]: irc
IRC Server: chat.freenode.net
Port [Default: 6667]:
Channels to join (comma separated) [Default: none]:
Traceback (most recent call last):
  File "/usr/local/bin/ibid-setup", line 5, in <module>
    pkg_resources.run_script('Ibid==0.2.0dev', 'ibid-setup')
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 528, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1394, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/local/lib/python2.7/dist-packages/Ibid-0.2.0dev-py2.7.egg/EGG-INFO/scripts/ibid-setup", line 126, in <module>
    db = DatabaseManager(check_schema_versions=False, sqlite_synchronous=False)
  File "/usr/local/lib/python2.7/dist-packages/Ibid-0.2.0dev-py2.7.egg/ibid/core.py", line 329, in __init__
    self.load(database)
  File "/usr/local/lib/python2.7/dist-packages/Ibid-0.2.0dev-py2.7.egg/ibid/core.py", line 348, in load
    assert_unicode=True, echo=echo
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/__init__.py", line 332, in create_engine
    return strategy.create(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/strategies.py", line 141, in create
    engineclass.__name__))
TypeError: Invalid argument(s) 'assert_unicode' sent to create_engine(), using configuration SQLiteDialect_pysqlite/SingletonThreadPool/Engine.  Please check that the keyword arguments are appropriate for this combination of components.