package libreoffice-avmedia-backend-gstreamer 1:4.2.8-0ubuntu5 [modified: usr/lib/libreoffice/program/libavmediagst.so] failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[Cthulhu Rlyeh]

Happened during startup. Didn't even touch the keyboard or mouse.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libreoffice-avmedia-backend-gstreamer 1:4.2.8-0ubuntu5 [modified: usr/lib/libreoffice/program/libavmediagst.so]
ProcVersionSignature: Ubuntu 4.4.0-66.87~14.04.1-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Wed Mar 8 09:02:59 2017
DpkgTerminalLog:
 Preparing to unpack .../libreoffice-avmedia-backend-gstreamer_1%3a5.1.6~rc2-0ubuntu1~xenial1_amd64.deb ...
 dpkg-maintscript-helper: error: directory '/usr/share/doc/libreoffice-avmedia-backend-gstreamer' contains files not owned by package libreoffice-avmedia-backend-gstreamer, cannot switch to symlink
 dpkg: error processing archive /var/cache/apt/archives/libreoffice-avmedia-backend-gstreamer_1%3a5.1.6~rc2-0ubuntu1~xenial1_amd64.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
DuplicateSignature:
 package:libreoffice-avmedia-backend-gstreamer:1:4.2.8-0ubuntu5 [modified: usr/lib/libreoffice/program/libavmediagst.so]
 Preparing to unpack .../libreoffice-avmedia-backend-gstreamer_1%3a5.1.6~rc2-0ubuntu1~xenial1_amd64.deb ...
 dpkg-maintscript-helper: error: directory '/usr/share/doc/libreoffice-avmedia-backend-gstreamer' contains files not owned by package libreoffice-avmedia-backend-gstreamer, cannot switch to symlink
 dpkg: error processing archive /var/cache/apt/archives/libreoffice-avmedia-backend-gstreamer_1%3a5.1.6~rc2-0ubuntu1~xenial1_amd64.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationDate: Installed on 2016-04-19 (322 days ago)
InstallationMedia: It
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: libreoffice
Title: package libreoffice-avmedia-backend-gstreamer 1:4.2.8-0ubuntu5 [modified: usr/lib/libreoffice/program/libavmediagst.so] failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2017-03-08 (0 days ago)