package libmetacity-private3a:amd64 1:3.18.7-0ubuntu0.1 failed to install/upgrade: package libmetacity-private3a:amd64 is already installed and configured

[SquirePaul]

don't know was installing VLC and was almost done when error message came up.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libmetacity-private3a:amd64 1:3.18.7-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 600:0:116:381971:2016-09-18 13:36:03.550987005 -0700:2016-09-18 13:36:04.550987005 -0700:/var/crash/libmetacity-private3a:amd64.0.crash
 600:0:116:381984:2016-09-18 13:36:04.502999456 -0700:2016-09-18 13:36:04.095105315 -0700:/var/crash/unity-settings-daemon.0.crash
 600:0:116:381981:2016-09-18 13:36:04.530992191 -0700:2016-09-18 13:36:04.502999456 -0700:/var/crash/unity-control-center.0.crash
Date: Sun Sep 18 13:36:04 2016
DuplicateSignature:
 package:libmetacity-private3a:amd64:1:3.18.7-0ubuntu0.1
 Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
 dpkg: error processing package unity-settings-daemon (--configure):
  package unity-settings-daemon is already installed and configured
ErrorMessage: package libmetacity-private3a:amd64 is already installed and configured
InstallationDate: Installed on 2016-09-18 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: dpkg
Title: package libmetacity-private3a:amd64 1:3.18.7-0ubuntu0.1 failed to install/upgrade: package libmetacity-private3a:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)