Duplicate entry '9fe2ff9ee4384b1894a90878d3e92bab' on db_sync

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I have trying to install Keystone Grizzly-3 and cannot get past the following error. The "keystone-manage db_sync" command is generating the following error. I have tried deleting and re-creating the MySQL database (connection = mysql://keystonedbadmin:password@15.253.59.37/keystone) but the error remains. Has anyone else run into this problem and found a solution? I noticed the role ID value 9fe2ff9ee4384b1894a90878d3e92bab in file "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/config.py".

root@build-HP-Compaq-6005-Pro-SFF-PC:~/keystone-2013.1.g3/keystone-2013.1.g3# keystone-manage db_sync
Traceback (most recent call last):
  File "/usr/local/bin/keystone-manage", line 5, in <module>
    pkg_resources.run_script('keystone==2013.1.g3', 'keystone-manage')
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 499, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1235, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/EGG-INFO/scripts/keystone-manage", line 28, in <module>
    cli.main(argv=sys.argv, config_files=config_files)
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/cli.py", line 172, in main
    CONF.command.cmd_class.main()
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/cli.py", line 53, in main
    driver.db_sync()
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/identity/backends/sql.py", line 171, in db_sync
    migration.db_sync()
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/common/sql/migration.py", line 52, in db_sync
    return versioning_api.upgrade(CONF.sql.connection, repo_path, version)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/api.py", line 186, in upgrade
    return _migrate(url, repository, version, upgrade=True, err=err, **opts)
  File "<string>", line 2, in _migrate
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/util/__init__.py", line 159, in with_engine
    return f(*a, **kw)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/api.py", line 366, in _migrate
    schema.runchange(ver, change, changeset.step)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/schema.py", line 91, in runchange
    change.run(self.engine, step)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/script/py.py", line 145, in run
    script_func(engine)
  File "/usr/local/lib/python2.7/dist-packages/keystone-2013.1.g3-py2.7.egg/keystone/common/sql/migrate_repo/versions/017_membership_role.py", line 42, in upgrade
    'enabled': 'True'}))
  File "/usr/local/lib/python2.7/dist-packages/SQLAlchemy-0.7.9-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1449, in execute
    params)
  File "/usr/local/lib/python2.7/dist-packages/SQLAlchemy-0.7.9-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1584, in _execute_clauseelement
    compiled_sql, distilled_params
  File "/usr/local/lib/python2.7/dist-packages/SQLAlchemy-0.7.9-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1698, in _execute_context
    context)
  File "/usr/local/lib/python2.7/dist-packages/SQLAlchemy-0.7.9-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1691, in _execute_context
    context)
  File "/usr/local/lib/python2.7/dist-packages/SQLAlchemy-0.7.9-py2.7-linux-x86_64.egg/sqlalchemy/engine/default.py", line 331, in do_execute
    cursor.execute(statement, parameters)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
sqlalchemy.exc.IntegrityError: (IntegrityError) (1062, "Duplicate entry '9fe2ff9ee4384b1894a90878d3e92bab' for key 'PRIMARY'") 'INSERT INTO role (id, name, extra)