package libmagickcore-6.q16-2:amd64 8:6.8.9.9-7ubuntu5.5 [modified: usr/share/doc/libmagickcore-6.q16-2/NEWS.Debian.gz] failed to install/upgrade: triggers ci file contains unknown directive 'e592ca1e1f4558593204e25f093473fd'

The package couldn't be removed nor updated and fails to update any other packages.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libmagickcore-6.q16-2:amd64 8:6.8.9.9-7ubuntu5.5 [modified: usr/share/doc/libmagickcore-6.q16-2/NEWS.Debian.gz]
ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Wed Apr 5 16:43:39 2017
DpkgTerminalLog:
 Removing libmagickcore-6.q16-2:amd64 (8:6.8.9.9-7ubuntu5.5) ...
 dpkg: error processing package libmagickcore-6.q16-2:amd64 (--remove):
  triggers ci file contains unknown directive 'e592ca1e1f4558593204e25f093473fd'
DuplicateSignature:
 package:libmagickcore-6.q16-2:amd64:8:6.8.9.9-7ubuntu5.5 [modified: usr/share/doc/libmagickcore-6.q16-2/NEWS.Debian.gz]
 Removing libmagickcore-6.q16-2:amd64 (8:6.8.9.9-7ubuntu5.5) ...
 dpkg: error processing package libmagickcore-6.q16-2:amd64 (--remove):
  triggers ci file contains unknown directive 'e592ca1e1f4558593204e25f093473fd'
ErrorMessage: triggers ci file contains unknown directive 'e592ca1e1f4558593204e25f093473fd'
InstallationDate: Installed on 2017-01-02 (96 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: imagemagick
Title: package libmagickcore-6.q16-2:amd64 8:6.8.9.9-7ubuntu5.5 [modified: usr/share/doc/libmagickcore-6.q16-2/NEWS.Debian.gz] failed to install/upgrade: triggers ci file contains unknown directive 'e592ca1e1f4558593204e25f093473fd'
UpgradeStatus: No upgrade log present (probably fresh install)