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I've installed both software on my Ubuntu 14.04, using the instructions here: http://screenfreeze.net/deskcon-ppa/

Everything worked, but after a restart I see deskcon-indicator in the taskbar, but it doesn't work.

It seems deskcon-server was not loaded, so I killed deskcon-indicator and started deskcon-server from terminal:

$ sudo deskcon-server

Then I launched deskcon-indicator:

$ deskcon-indicator 
$ ERROR:dbus.proxies:Introspect error on net.screenfreeze.desktopconnector:/net/screenfreeze/desktopconnector: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name net.screenfreeze.desktopconnector was not provided by any .service files
Traceback (most recent call last):
  File "./deskcon-indicator", line 87, in setupdevice
  File "./deskcon-indicator", line 232, in setup_device
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
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