package apparmor 2.8.95~2430-0ubuntu5.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255

[Bernd Laser]

Failure on login. Failure on update. Please fix this.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: apparmor 2.8.95~2430-0ubuntu5.1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Sat Dec 6 09:59:23 2014
DuplicateSignature: package:apparmor:2.8.95~2430-0ubuntu5.1:subprocess installed post-installation script returned error exit status 255
ErrorMessage: subprocess installed post-installation script returned error exit status 255
InstallationDate: Installed on 2013-10-02 (446 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130925.1)
ProcKernelCmdline: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=1440d080-bfd3-4290-876c-4350ed113d7d ro quiet splash
SourcePackage: apparmor
Syslog: Dec 23 10:56:02 link dbus[507]: [system] AppArmor D-Bus mediation is enabled
Title: package apparmor 2.8.95~2430-0ubuntu5.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255
UpgradeStatus: Upgraded to trusty on 2014-03-29 (269 days ago)