package gnome-accessibility-themes 3.18.0-2ubuntu2 failed to install/upgrade: unable to open '/usr/share/icons/HighContrast/32x32/status/microphone-sensitivity-low.png.dpkg-new': Operation not permitted

[Meintjes Bekker]

Just noticed the pop-ups after I've done updates. Updates keep failing!

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gnome-accessibility-themes 3.18.0-2ubuntu2
ProcVersionSignature: Ubuntu 4.10.0-27.30~16.04.2-generic 4.10.17
Uname: Linux 4.10.0-27-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Wed Apr 4 21:08:21 2018
Dependencies:

DuplicateSignature:
 package:gnome-accessibility-themes:3.18.0-2ubuntu2
 Unpacking gnome-accessibility-themes (3.18.0-2ubuntu2) over (3.18.0-2ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/gnome-accessibility-themes_3.18.0-2ubuntu2_all.deb (--unpack):
  unable to open '/usr/share/icons/HighContrast/32x32/status/microphone-sensitivity-low.png.dpkg-new': Operation not permitted
ErrorMessage: unable to open '/usr/share/icons/HighContrast/32x32/status/microphone-sensitivity-low.png.dpkg-new': Operation not permitted
InstallationDate: Installed on 2017-03-13 (388 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.26
SourcePackage: gnome-themes-standard
Title: package gnome-accessibility-themes 3.18.0-2ubuntu2 failed to install/upgrade: unable to open '/usr/share/icons/HighContrast/32x32/status/microphone-sensitivity-low.png.dpkg-new': Operation not permitted
UpgradeStatus: No upgrade log present (probably fresh install)