Glance driver failed to load

I just encountered this error on the master branch when I ran stack.sh for the first time on a fresh clone of devstack master today on a fresh ubuntu server 14.04.2 vm. Do you think that's a new issue or the same issue left unresolved in master branch?

Also, could someone point me to how the issue was resolved in liberty? Thanks!

Except from congress.log:

 from (pid=71703) _http_log_response /usr/local/lib/python2.7/dist-packages/keystoneclient/session.py:215
2015-10-12 17:45:56.559 DEBUG congress.api.application [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] Handling request 'POST /v1/data-sources' with CollectionHandler(/v1/data-sources$) from (pid=71703) __call__ /opt/stack/congress/congress/api/application.py:45
2015-10-12 17:45:56.561 DEBUG congress.managers.datasource [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] adding datasource glancev2 from (pid=71703) add_datasource /opt/stack/congress/congress/managers/datasource.py:48
2015-10-12 17:45:56.561 DEBUG congress.managers.datasource [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] updating db from (pid=71703) add_datasource /opt/stack/congress/congress/managers/datasource.py:50
2015-10-12 17:45:56.569 DEBUG congress.managers.datasource [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] creating policy glancev2 from (pid=71703) add_datasource /opt/stack/congress/congress/managers/datasource.py:65
2015-10-12 17:45:56.569 DEBUG PolicyEngine [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] Creating policy <glancev2> with abbr <glanc> and kind <None> from (pid=71703) create_policy /opt/stack/congress/congress/policy_engines/agnostic.py:428
2015-10-12 17:45:56.570 DEBUG PolicyEngine [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] Created policy <glancev2> with abbr <glanc> and kind <nonrecursive> from (pid=71703) create_policy /opt/stack/congress/congress/policy_engines/agnostic.py:449
2015-10-12 17:45:56.570 INFO congress.dse.deepsix [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] d6cage:: creating service glancev2 with module congress.datasources.glancev2_driver.GlanceV2Driver and args {u'username': u'admin', u'tenant_name': u'', u'poll_time': u'10', u'password': u'****', u'auth_url': u'http://192.168.218.145:5000/v2.0'}
2015-10-12 17:45:56.570 DEBUG congress.dse.deepsix [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] glancev2:: publishing to dataindex routeKeys with data {'keys': ['allservices', 'local.allservices']} from (pid=71703) log_debug /opt/stack/congress/congress/dse/deepsix.py:549
2015-10-12 17:45:56.572 DEBUG congress.dse.deepsix [req-e57c939e-0dd0-41ab-9787-4de99087dd71 admin 7cf61a8629c74ed884f950178d9f6011] glancev2:: pushing dataindex routeKeys to subscribers {} an...