package maas-region-controller 1.2+bzr1373+dfsg-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

I've installed "maas" on Ubuntu 12.10 Desktop
Then ا have a problem in installing this package "maas-region-controller"
I discovered that the package should work on Ubuntu server ,
After that ا purged all mass packages
But I think that this package Malt exist which are damaged "maas-region-controller"
Whenever the update process was conducted updates are performed successfully, but at the end of the process show a message saying that the update manager is trying to install the same package malfunctioning and then say that the installation process has failed
i mean the installation of the " maas-region-controller " at the end of update process
Although I've delet all "mass" packages

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: maas-region-controller 1.2+bzr1373+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.7.0-7.15-generic 3.7.0
Uname: Linux 3.7.0-7-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu13
Architecture: amd64
Date: Tue Nov 5 00:20:38 2013
DuplicateSignature: package:maas-region-controller:1.2+bzr1373+dfsg-0ubuntu1:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2013-04-23 (195 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
RelatedPackageVersions:
 python-django-maas 1.2+bzr1373+dfsg-0ubuntu1
 apparmor 2.8.0-0ubuntu5.1
SourcePackage: maas
Title: package maas-region-controller 1.2+bzr1373+dfsg-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to quantal on 2013-09-09 (56 days ago)