package lightdm 1.17.5-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Charles]

Updating system after new install

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: lightdm 1.17.5-0ubuntu2
ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3
Uname: Linux 4.3.0-7-generic x86_64
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
Date: Wed Feb 10 15:03:17 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-02-10 (0 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160127.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.1.10
SourcePackage: lightdm
Title: package lightdm 1.17.5-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[KC1DI (davekc1di)]

Additional out put from terminal
Setting up lightdm (1.17.5-0ubuntu2) ...
insserv: Service dbus has to be enabled to start service lightdm
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: error processing package lightdm (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of ubuntu-mate-core:
 ubuntu-mate-core depends on lightdm; however:
  Package lightdm is not configured yet.

dpkg: error processing package ubuntu-mate-core (--configure):No apport report written because the error message indicates its a followup error from a previous failure.

 dependency problems - leaving unconfigured
Errors were encountered while processing:
 lightdm
 ubuntu-mate-core
E: Sub-process /usr/bin/dpkg returned an error code (1)