Setting up nova-common (2012.1.3+stable-20120827-4d2a4afe-0ubuntu1) ...
usermod: no changes
Traceback (most recent call last):
  File "/usr/bin/nova-manage", line 92, in <module>
    from nova.compute import instance_types
  File "/usr/lib/python2.7/dist-packages/nova/compute/__init__.py", line 24, in <module>
    API = nova.utils.import_class(nova.flags.FLAGS.compute_api_class)
  File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 75, in import_class
    __import__(mod_str)
  File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 39, in <module>
    import nova.image
  File "/usr/lib/python2.7/dist-packages/nova/image/__init__.py", line 22, in <module>
    from nova.image import glance
  File "/usr/lib/python2.7/dist-packages/nova/image/glance.py", line 44, in <module>
    GlanceClient = utils.import_class('glance.client.Client')
  File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 79, in import_class
    raise exception.ClassNotFound(class_name=class_str, exception=exc)
nova.exception.ClassNotFound: Class Client could not be found: No module named client
dpkg: error processing nova-common (--configure):
 subprocess installed post-installation script returned error exit status 1