<type 'exceptions.SystemError'>: E:I wasn't able to locate a file for the libunity4 package. This might mean you need to manually fix this package.

[saleh haider]

i was upgrading to 11.10 but the laptop shutdown during the cleaning level...so now i can't upgrade anumore, everytime i select partially upgrade it says error
thnk u

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: aptdaemon 0.43+bzr697-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: wl
Annotation: Upgrading the system failed
ApportVersion: 1.23-0ubuntu2
AptTermLog:

Architecture: i386
Date: Sat Oct 1 10:52:51 2011
DesktopFile: /usr/share/aptdaemon/aptdaemon.desktop
ExecutablePath: /usr/sbin/aptd
PackageArchitecture: all
SourcePackage: aptdaemon
Title: <type 'exceptions.SystemError'>: E:I wasn't able to locate a file for the libunity4 package. This might mean you need to manually fix this package.
TransactionDepends: [[], [], [], [], [], [], []]
TransactionErrorCode: error-unknown
TransactionKwargs: {'safe_mode': dbus.Boolean(True)}
TransactionLocale:

TransactionOutput:

TransactionPackages: [[], [], [], [], [], []]
TransactionRole: role-upgrade-system
UpgradeStatus: Upgraded to oneiric on 2011-10-01 (0 days ago)

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #858707, 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.