package imagemagick 8:6.7.7.10-6ubuntu3.6 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

No additional info...

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: imagemagick 8:6.7.7.10-6ubuntu3.6
ProcVersionSignature: Ubuntu 3.13.0-112.159-generic 3.13.11-ckt39
Uname: Linux 3.13.0-112-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
Date: Wed Apr 5 17:32:24 2017
DpkgHistoryLog:
 Start-Date: 2017-04-05 17:31:32
 Commandline: apt-get install postgresql-9.6
 Install: postgresql-9.6:amd64 (9.6.2-1.pgdg14.04+1), postgresql-common:amd64 (180.pgdg14.04+1, automatic), postgresql-contrib-9.6:amd64 (9.6.2-1.pgdg14.04+1, automatic), postgresql-client-9.6:amd64 (9.6.2-1.pgdg14.04+1, automatic), sysstat:amd64 (10.2.0-1, automatic), pgdg-keyring:amd64 (2017.1, automatic), postgresql-client-common:amd64 (180.pgdg14.04+1, automatic)
 Upgrade: libpq5:amd64 (9.3.16-0ubuntu0.14.04, 9.6.2-1.pgdg14.04+1)
DuplicateSignature: package:imagemagick:8:6.7.7.10-6ubuntu3.6:package is in a very bad inconsistent state; you should reinstall it before attempting configuration
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
InstallationDate: Installed on 2016-02-09 (426 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: imagemagick
Title: package imagemagick 8:6.7.7.10-6ubuntu3.6 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: Upgraded to trusty on 2016-08-19 (234 days ago)