Comment 3 for bug 1306824

Still fails for me, albeit with a different backtrace (see below). Should I file a separate bug for this?

dannf@mustang:~$ sudo apt-get install landscape-client
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  at-spi2-core libgphoto2-l10n libxtst6 python-twisted-names
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  landscape-common
The following packages will be upgraded:
  landscape-client landscape-common
2 upgraded, 0 newly installed, 0 to remove and 134 not upgraded.
Need to get 211 kB of archives.
After this operation, 27.6 kB disk space will be freed.
Do you want to continue? [Y/n]
Get:1 http://ppa.launchpad.net/landscape/trunk/ubuntu/ utopic/main landscape-client arm64 14.08+bzr791-0ubuntu0~ubuntu14.10.1 [32.4 kB]
Get:2 http://ppa.launchpad.net/landscape/trunk/ubuntu/ utopic/main landscape-common arm64 14.08+bzr791-0ubuntu0~ubuntu14.10.1 [178 kB]
Fetched 211 kB in 1s (162 kB/s)
Preconfiguring packages ...
(Reading database ... 131411 files and directories currently installed.)
Preparing to unpack .../landscape-client_14.08+bzr791-0ubuntu0~ubuntu14.10.1_arm64.deb ...
 * Stopping landscape-client daemon [fail]
Unpacking landscape-client (14.08+bzr791-0ubuntu0~ubuntu14.10.1) over (14.01-0ubuntu3) ...
Preparing to unpack .../landscape-common_14.08+bzr791-0ubuntu0~ubuntu14.10.1_arm64.deb ...
Unpacking landscape-common (14.08+bzr791-0ubuntu0~ubuntu14.10.1) over (14.01-0ubuntu3) ...
Processing triggers for man-db (2.7.0.2-1) ...
Processing triggers for ureadahead (0.100.0-16) ...
Setting up landscape-common (14.08+bzr791-0ubuntu0~ubuntu14.10.1) ...
Setting up landscape-client (14.08+bzr791-0ubuntu0~ubuntu14.10.1) ...
Installing new version of config file /etc/init.d/landscape-client ...
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
landscape-client is not configured, please run landscape-config.
Processing triggers for ureadahead (0.100.0-16) ...
dannf@mustang:~$ sudo /usr/bin/landscape-monitor
2014-10-14 11:04:11,246 INFO [MainThread] Monitor started with config /etc/landscape/client.conf
Traceback (most recent call last):
  File "/usr/bin/landscape-monitor", line 8, in <module>
    run(sys.argv)
  File "/usr/lib/python2.7/dist-packages/landscape/monitor/service.py", line 66, in run
    run_landscape_service(MonitorConfiguration, MonitorService, args)
  File "/usr/lib/python2.7/dist-packages/landscape/service.py", line 121, in run_landscape_service
    startApplication(application, False)
  File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 658, in startApplication
    service.IService(application).startService()
  File "/usr/lib/python2.7/dist-packages/twisted/application/service.py", line 282, in startService
    service.startService()
  File "/usr/lib/python2.7/dist-packages/landscape/monitor/service.py", line 40, in startService
    self.publisher.start()
  File "/usr/lib/python2.7/dist-packages/landscape/amp.py", line 45, in start
    self._port = self._reactor.listen_unix(socket_path, factory)
  File "/usr/lib/python2.7/dist-packages/landscape/reactor.py", line 230, in listen_unix
    return self._reactor.listenUNIX(socket, factory, wantPID=True)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 408, in listenUNIX
    p.startListening()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/unix.py", line 273, in startListening
    if not self.lockFile.lock():
  File "/usr/lib/python2.7/dist-packages/twisted/python/lockfile.py", line 127, in lock
    symlink(str(os.getpid()), self.name)
OSError: [Errno 2] No such file or directory