package clamtk 5.20-1 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

[Grant Burton]

error during update

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: clamtk 5.20-1
ProcVersionSignature: Ubuntu 4.8.0-56.61~16.04.1-lowlatency 4.8.17
Uname: Linux 4.8.0-56-lowlatency x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
Date: Sat Jul 15 10:54:25 2017
DuplicateSignature:
 package:clamtk:5.20-1
 Installing from local file /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20170711.1.orig.tar.gz
 Flash Plugin installed.
 dpkg: error processing package clamtk (--configure):
  package is in a very bad inconsistent state; you should
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
InstallationDate: Installed on 2017-04-08 (97 days ago)
InstallationMedia: Ubuntu-Studio 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: clamtk
Title: package clamtk 5.20-1 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: No upgrade log present (probably fresh install)

[Brian Murray (brian-murray)]

Due to a bug in apport's method for creating a duplicate signature, the DuplicateSignature in this report was incorrect. We are fixing that now, sorry for the noise!

[Launchpad Janitor (janitor)]

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