Network manager stopped working after some update

[Johan]

'sudo NetworkManager' gives:
(NetworkManager:7010): GLib-WARNING **: GError set over the top of a previous GError or uninitialized memory.
This indicates a bug in someone's code. You must ensure an error is NULL before it's set.
The overwriting error message was: Key file does not have group 'connectivity'

To get network interface to work I have to do like this:
'sudo ip link set dev eth0 down'
'sudo dhclient eth0'

Ubuntu 14.04.3 LTS

'apt-cache policy network-manager':
network-manager:
  Installed: 0.9.8.8-0ubuntu7.2
  Candidate: 0.9.8.8-0ubuntu7.2
  Version table:
 *** 0.9.8.8-0ubuntu7.2 0
        500 http://mirror.one.com/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.9.8.8-0ubuntu7.1 0
        500 http://mirror.one.com/ubuntu/ trusty-security/main amd64 Packages
     0.9.8.8-0ubuntu7 0
        500 http://mirror.one.com/ubuntu/ trusty/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager 0.9.8.8-0ubuntu7.2
ProcVersionSignature: Ubuntu 3.13.0-77.121-generic 3.13.11-ckt32
Uname: Linux 3.13.0-77-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Feb 1 10:57:19 2016
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2012-10-28 (1190 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
IpRoute:
 default via 192.168.1.1 dev eth0
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.110
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to trusty on 2016-02-01 (0 days ago)
WifiSyslog:

mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2014-02-01T11:14:17.778018
nmcli-con:
 Error: command ['nmcli', '-f', 'all', 'con'] failed with exit code 9:
 ** (process:6612): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files
 Error: nmcli (0.9.8.8) and NetworkManager (unknown) versions don't match. Force execution using --nocheck, but the results are unpredictable.
nmcli-dev: Error: command ['nmcli', '-f', 'all', 'dev'] failed with exit code 8: Error: NetworkManager is not running.
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 not running unknown unknown unknown unknown unknown unknown unknown

[Launchpad Janitor (janitor)]

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

[Johan (johans-postbox)]

Latest update of network-manager (feb 04) solved the issue for me.