package libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Dennis Daly]

installing OpenVPN

sudo apt-get install openvpn network-manager-openvpn network-manager-openvpn-gnome

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.5
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic i686
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
Date: Thu Jan 1 14:59:33 2015
DpkgHistoryLog:
 Start-Date: 2015-01-01 14:59:23
 Commandline: apt-get install openvpn network-manager-openvpn network-manager-openvpn-gnome
 Install: libpkcs11-helper1:i386 (1.11-1, automatic), network-manager-openvpn:i386 (0.9.8.2-1ubuntu4), network-manager-openvpn-gnome:i386 (0.9.8.2-1ubuntu4), openvpn:i386 (2.3.2-7ubuntu3.1)
DuplicateSignature: package:libapache2-mod-php5:5.5.9+dfsg-1ubuntu4.5:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2014-10-23 (72 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
SourcePackage: php5
Title: package libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.apache2.mods.available.php5.conf: [deleted]
modified.conffile..etc.apache2.mods.available.php5.load: [deleted]

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.