Open Stack Horizon configuration assistance

Hello All,

I am in the process of installing Openstack on Ubuntu Server 12.04 and am up to the final stage to configure the horizon web front end. When I go to http://<myserver>/horizon and log in with my admin account (which is configured in Keystone), I get an Internal Server Error.

I am not sure where to start troubleshooting this, as their doesn't seem to be an openstack-dashboard error logs. Apache error log shows the following:
[Wed Mar 13 16:47:37 2013] [error] File "/usr/lib/python2.7/dist-packages/keystoneclient/service_catalog.py", line 62, in url_for
[Wed Mar 13 16:47:37 2013] [error] raise exceptions.EndpointNotFound('Endpoint not found.')

I did find an article where is talks about /etc/openstack-dashboard/local_settings.py using 'Member' as the default role from keystone. I have created this role to no avail.

All my nova services are up and showing as healthy:
Code:
Binary Host Zone Status State Updated_At
nova-consoleauth ms-os01 nova enabled :-) 2013-03-13 11:45:18
nova-cert ms-os01 nova enabled :-) 2013-03-13 11:45:18
nova-scheduler ms-os01 nova enabled :-) 2013-03-13 11:45:14
nova-compute ms-os01 nova enabled :-) 2013-03-13 11:45:15
nova-network ms-os01 nova enabled :-) 2013-03-13 11:45:15
Any ideas would be welcome

Thanks in advance,

Rich