Glance-registry not starting on Wheezy

Hello,

I'm trying to install OpenStack and I have successfully install Keystone with these tutorials: http://docs.openstack.org/grizzly/basic-install/apt/content/ and http://docs.openstack.org/trunk/openstack-compute/install/yum/content/ch_installing-openstack-overview.html

Now I have some difficulties with Glance services.
Glance-api seems to work great.
Glance-registry seems to work when I launch "service glance-registry start" but there is no processus named glance-registry with the command "ps aux | grep glance-registry" and there is no information in /var/log/glance/registry.log.

However when I try this command => glance-registry glance-registry.conf &
I have this error => ERROR: Unable to load glance-registry-keystone from configuration file /etc/glance/glance-registry-paste.ini.
Got: ImportError("<class 'glance.registry.api.v1.API'> has no 'factory' attribute",)

Consequently when I have an error when I try the command "glance index" : Failed to show index. Got error:
The request returned 503 Service Unavilable. This generally occurs on service overload or other transient outage.

This is the file glance-registry-paste.ini

# Use this pipeline for no auth - DEFAULT
#[pipeline:glance-registry]
#pipeline = unauthenticated-context registryapp

# Use this pipeline for keystone auth
[pipeline:glance-registry-keystone]
pipeline = authtoken context registryapp

[filter:authtoken]
paste.filter_factory = keystoneclient.middleware.auth_token:filter_factory
admin_tenant_name = service
admin_user = glance
admin_password = glance

[app:registryapp]
paste.app_factory = glance.registry.api.v1:API.factory

[filter:context]
paste.filter_factory = glance.api.middleware.context:ContextMiddleware.factory

[filter:unauthenticated-context]
paste.filter_factory = glance.api.middleware.context:UnauthenticatedContextMiddleware.factory

[filter:authtoken]
paste.filter_factory = keystoneclient.middleware.auth_token:filter_factory

Thank you in advance for your help :)