Comment 29 for bug 1289807

See reply #20 as to location of libwayland_ltst-client.so.0. That says

In my case, libwayland_ltst-client.so.0 is not in my system. In fact it belongs to the package libwayland-ltst-client0 that is a Precise upgrade of the HWE to the Trusty stack. I upgraded from 12.04.5 -> 14.04.1. So I cannot understand why libwayland_ltst-client.so.0 is being called.

As further explanation, I upgraded the HWE stack while still on Precise. That had libwayland_ltst-client.so.0 as part of the package. When I upgraded to Trusty, that package was removed. However, it seems

unity-control-center user-accounts

still expects the package to be present as it is calling libwayland_ltst-client.so.0. Something was obviously not upgraded properly, but I have no idea what that may be.

dpkg -s unity-control-center

gives the following:

Package: unity-control-center
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 4112
Maintainer: Ubuntu Desktop Team <email address hidden>
Architecture: amd64
Version: 14.04.3+14.04.20140604-0ubuntu1
Replaces: gnome-bluetooth (<< 3.4.0), gnome-control-center-unity, unity-control-center-datetime
Provides: gnome-control-center-unity, unity-control-center-datetime
Depends: session-migration, libaccountsservice0 (>= 0.6.34), libatk1.0-0 (>= 1.12.4), libc6 (>= 2.7), libcairo2 (>= 1.10.0), libcanberra-gtk3-0 (>= 0.25), libcanberra0 (>= 0.2), libcheese-gtk23 (>= 3.4.0), libcheese7 (>= 3.0.1), libcolord1 (>= 0.1.29), libcups2 (>= 1.6.0), libdbus-glib-1-2 (>= 0.78), libfontconfig1 (>= 2.9.0), libgdk-pixbuf2.0-0 (>= 2.23.0), libgl1-mesa-glx | libgl1, libglib2.0-0 (>= 2.37.3), libgnome-bluetooth11 (>= 3.4.0), libgnome-desktop-3-7 (>= 3.7.3), libgnome-menu-3-0 (>= 3.2.0.1), libgtk-3-0 (>= 3.10.0), libgtop2-7 (>= 2.22.3), libibus-1.0-5 (>= 1.5.1), libkrb5-3 (>= 1.8+dfsg), libnm-glib4 (>= 0.9.2.0+git201202091648.c24c4d4), libnm-gtk0 (>= 0.9.1.95), libnm-util2 (>= 0.9.1.90+git.20111206t233146.dff0d2a), libnotify4 (>= 0.7.3), libpango-1.0-0 (>= 1.18.0), libpangocairo-1.0-0 (>= 1.18.0), libpolkit-gobject-1-0 (>= 0.99), libpulse-mainloop-glib0 (>= 1:0.99.1), libpulse0 (>= 1:0.99.1), libpwquality1 (>= 1.1.0), libtimezonemap1 (>= 0.4.1), libunity-control-center1 (>= 14.04.0), libupower-glib1 (>= 0.9.2), libwacom2 (>= 0.7), libwebkitgtk-3.0-0 (>= 1.3.10), libx11-6, libxi6 (>= 2:1.2.99.4), libxml2 (>= 2.7.4), accountsservice, apg, desktop-file-utils, gkbd-capplet (>= 3.5.90), gnome-desktop3-data, gnome-icon-theme (>= 2.24), gnome-icon-theme-symbolic, gnome-menus (>= 2.12.0), unity-settings-daemon, gsettings-desktop-schemas (>= 3.5.91), gsettings-ubuntu-schemas (>= 0.0.1+14.04.20140224), ibus, indicator-bluetooth, indicator-datetime, indicator-keyboard, indicator-power, indicator-sound
Recommends: cups-pk-helper, gnome-session-bin, ubuntu-system-service, ibus (>= 1.5.0), iso-codes, mousetweaks, policykit-1-gnome, libcanberra-pulse, system-config-printer-gnome, gnome-control-center-shared-data
Suggests: gnome-screensaver | xscreensaver, gnome-user-guide | ubuntu-docs, gstreamer0.10-pulseaudio, libcanberra-gtk-module, x11-xserver-utils
Breaks: compiz (<< 1:0.9.8+bzr330), gnome-bluetooth (<< 3.4.0), gnome-power-manager (<< 3.0), gnome-session (<< 3.0), libglib2.0-0 (<< 2.28.6-2), metacity (<< 1:2.34.2), unity (<< 6.2-0ubuntu2~)
Conflicts: gnome-control-center (<< 1:3.6.3-0ubuntu50), gnome-control-center-unity, unity-control-center-datetime
Conffiles:
 /etc/xdg/menus/unitycc.menu 07c93873918905804c3f08b9caa0a75c
Description: utilities to configure the GNOME desktop
 This package contains configuration applets for the GNOME desktop,
 allowing to set accessibility configuration, desktop fonts, keyboard
 and mouse properties, sound setup, desktop theme and background, user
 interface properties, screen resolution, and other GNOME parameters.
 .
 It also contains a front end to these applets, which can also be
 accessed with the GNOME panel or the Nautilus file manager.

This is probably an upgrade issue, but it surely involves unity-control-center.