update-manager crashed with ImportError in __main__: No module named UpdateManager.UpdateManager

[mastaiza]

ups

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.166
ProcVersionSignature: Ubuntu 3.5.0-4.4-generic 3.5.0-rc6
Uname: Linux 3.5.0-4-generic i686
ApportVersion: 2.3-0ubuntu4
Architecture: i386
CrashCounter: 1
Date: Wed Jul 11 07:13:30 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1341965132'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'564'
 b'com.ubuntu.update-manager' b'window-width' b'737'
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120606.2)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/update-manager
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
PythonArgs: ['/usr/bin/update-manager']
SourcePackage: update-manager
Title: update-manager crashed with ImportError in __main__: No module named UpdateManager.UpdateManager
Traceback:
 Traceback (most recent call last):
   File "/usr/bin/update-manager", line 37, in <module>
     from UpdateManager.UpdateManager import UpdateManager
 ImportError: No module named UpdateManager.UpdateManager
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1022994, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.