package ppp 2.4.5-5.1ubuntu2.2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[Hossam Riad]

The following message popped up:

Could not install '/var/cache/apt/archives/ppp_2.4.6-3.1ubuntu1_amd64.deb'

The upgrade will continue but the '/var/cache/apt/archives/ppp_2.4.6-3.1ubuntu1_amd64.deb' package may not be in a working state. Please consider submitting a bug report about it.

subprocess new pre-installation script returned error exit status 1

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: ppp 2.4.5-5.1ubuntu2.2
ProcVersionSignature: Ubuntu 3.13.0-77.121-generic 3.13.11-ckt32
Uname: Linux 3.13.0-77-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Fri Feb 12 20:29:42 2016
DuplicateSignature: package:ppp:2.4.5-5.1ubuntu2.2:subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationDate: Installed on 2014-11-30 (439 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: ppp
Title: package ppp 2.4.5-5.1ubuntu2.2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2016-02-12 (0 days ago)

[Launchpad Janitor (janitor)]

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

[Brian Walker (walkerbp)]

Was running a synergy client during the upgrade operation which might explain why the point to point upgrade didn't work?