while upgrading Linux version, i got this error.
ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.210
ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2
Uname: Linux 3.13.0-8-generic i686
ApportVersion: 2.13.2-0ubuntu2
Architecture: i386
CrashDB: ubuntu
Date: Mon Feb 10 15:18:44 2014
ExecutablePath: /usr/bin/do-release-upgrade
InstallationDate: Installed on 2013-06-07 (247 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
InterpreterPath: /usr/bin/python3.3
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/lib/ubuntu-release-upgrader/do-partial-upgrade --frontend=DistUpgradeViewGtk3
PythonArgs: ['/usr/bin/do-release-upgrade', '--frontend=DistUpgradeViewGtk3']
SourcePackage: ubuntu-release-upgrader
SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
Title: do-release-upgrade crashed with AssertionError in confirmChanges()
UpgradeStatus: Upgraded to trusty on 2014-01-17 (24 days ago)
UserGroups: lp lpadmin
Status changed to 'Confirmed' because the bug affects multiple users.