package libmpdec2:amd64 2.4.2-1 failed to install/upgrade: package libmpdec2:amd64 is already installed and configured

[joseph rich]

keeps on failing when in boot up

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libmpdec2:amd64 2.4.2-1
ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
Uname: Linux 4.4.0-16-generic x86_64
ApportVersion: 2.20-0ubuntu3
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports: 600:0:116:285864:2016-03-31 13:01:01.607723712 +0100:2016-03-31 13:01:02.607723712 +0100:/var/crash/libmpdec2:amd64.0.crash
Date: Thu Mar 31 13:01:02 2016
Dependencies:
 gcc-6-base 6-20160319-0ubuntu1
 libc6 2.23-0ubuntu2
 libgcc1 1:6-20160319-0ubuntu1
DuplicateSignature:
 Unpacking thunderbird-locale-en-gb (1:38.6.0+build1-0ubuntu1) ...
 dpkg: error processing package libmpdec2:amd64 (--configure):
  package libmpdec2:amd64 is already installed and configured
ErrorMessage: package libmpdec2:amd64 is already installed and configured
InstallationDate: Installed on 2016-03-31 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.9
SourcePackage: dpkg
Title: package libmpdec2:amd64 2.4.2-1 failed to install/upgrade: package libmpdec2:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)