I wrote an installation script for OpenStack Grizzly on Ubuntu 13.04. Occasionally when I run this script, I'll get the error "Unable to authenticate to any available projects." when logging into Horizon even though the script may have worked perfectly the previous time. Does anyone have any suggestions for where to begin with this?

I know the error has to do with a lack of tokens based on the actual code: http://django-openstack-auth.readthedocs.org/en/latest/_modules/openstack_auth/backend.html (http://django-openstack-auth.readthedocs.org/en/latest/modules/openstackauth/backend.html)

Thanks in advance!