package click-apparmor 0.2ubuntu1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 100

[steve]

it started with broken-package issues re. bind9. i re-installed debian repositories but still have issues with apt update...

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: click-apparmor 0.2ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-95.142-generic 3.13.11-ckt39
Uname: Linux 3.13.0-95-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
Date: Thu Sep 8 18:22:58 2016
DpkgTerminalLog:
 Removing click-apparmor (0.2ubuntu1) ...
 invoke-rc.d: unknown initscript, /etc/init.d/click-apparmor not found.
 /usr/sbin/invoke-rc.d: 1: /usr/sbin/invoke-rc.d: /sbin/runlevel: not found
 dpkg: error processing package click-apparmor (--remove):
  subprocess installed pre-removal script returned error exit status 100
DuplicateSignature: package:click-apparmor:0.2ubuntu1:subprocess installed pre-removal script returned error exit status 100
ErrorMessage: subprocess installed pre-removal script returned error exit status 100
InstallationDate: Installed on 2016-08-21 (18 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.14
SourcePackage: click-apparmor
Title: package click-apparmor 0.2ubuntu1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 100
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.