package m4 1.4.17-2ubuntu1 failed to install/upgrade: package m4 is already installed and configured

[Vince Milne]

I just get the above error

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: m4 1.4.17-2ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-34.39~14.04.1-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
AptdaemonVersion: 1.1.1-1ubuntu5.2
Architecture: amd64
Date: Thu Mar 24 10:18:24 2016
Dependencies:
 gcc-4.9-base 4.9.3-0ubuntu4
 libc6 2.19-0ubuntu6.7
 libgcc1 1:4.9.3-0ubuntu4
 libsigsegv2 2.10-2
 multiarch-support 2.19-0ubuntu6.7
DuplicateSignature: package:m4:1.4.17-2ubuntu1:package m4 is already installed and configured
ErrorMessage: package m4 is already installed and configured
InstallationDate: Installed on 2016-03-22 (3 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.11
SourcePackage: m4
Title: package m4 1.4.17-2ubuntu1 failed to install/upgrade: package m4 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)