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Quantum-common install fails?

Hi,

We're running a multi-node Openstack environment (Grizzly) on Ubuntu 12.04. Recently, when adding a compute node to the cluster, the following error occurs when installing quantum-common:

Setting up quantum-common (2012.1-0ubuntu4) ...
Adding system user `quantum' (UID 110) ...
Adding new user `quantum' (UID 110) with group `quantum' ...
Not creating home directory `/var/lib/quantum'.
chown: cannot access `/etc/quantum/': No such file or directory
dpkg: error processing quantum-common (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of quantum-plugin-openvswitch-agent:
quantum-plugin-openvswitch-agent depends on quantum-common; however:
  Package quantum-common is not configured yet.
dpkg: error processing quantum-plugin-openvswitch-agent (--configure):
dependency problems - leaving unconfigured Processing triggers for libc-bin ...
ldconfig deferred processing now taking place No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
quantum-common
quantum-plugin-openvswitch-agent
E: Sub-process /usr/bin/dpkg returned an error code (1)

The quantum-plugin-openvswitch-agent also fails because of its dependency on quantum-common.

We've tried creating /etc/quantum manually and installing the package, however the directory remains empty.

This bug was reportedly fixed in version 2012.1-0ubuntu3 in April of 2012. https://bugs.launchpad.net/ubuntu/+source/quantum/+bug/979159

Our cluster was initially set up using the guide here: https://github.com/mseknibilel/OpenStack-Grizzly-Install-Guide/blob/OVS_MultiNode/OpenStack_Grizzly_Install_Guide.rst

We've been following these instructions to add compute nodes in the past without issue.

Has anyone else been experiencing this, or have any insight into what's happening?

Thanks.