I use this feature daily to switch screen dimming from '5 minutes' to 'never' for streaming. Feature worked on 03-11, did an update on 03-12 which included a new switchboard version, and the feature stopped working. All other switchboard features work without crashing. Synaptic gives no option to force a previous version. Running in terminal shows the error. Update log and terminal error listed below.
Start-Date: 2016-03-12 08:40:10
Commandline: apt-get upgrade
Upgrade: bind9-host:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), liblwres90:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), switchboard-plug-power:amd64 (0.2.2+r272~daily~ubuntu0.3.2.1, 0.2.2+r279~daily~ubuntu0.3.2.1), switchboard-plug-display:amd64 (0.1.1.1+r130~daily~ubuntu0.3.2.1, 0.1.1.1+r131~daily~ubuntu0.3.2.1), libgnutls-openssl27:amd64 (2.12.23-12ubuntu2.4, 2.12.23-12ubuntu2.5), glib-networking-common:amd64 (2.40.0-1, 2.40.0-1ubuntu0.1), libdns100:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), perl:amd64 (5.18.2-2ubuntu1, 5.18.2-2ubuntu1.1), python-samba:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), libisccfg90:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), libssl1.0.0:amd64 (1.0.1f-1ubuntu2.16, 1.0.1f-1ubuntu2.18), libssl1.0.0:i386 (1.0.1f-1ubuntu2.16, 1.0.1f-1ubuntu2.18), perl-base:amd64 (5.18.2-2ubuntu1, 5.18.2-2ubuntu1.1), libgraphite2-3:amd64 (1.2.4-1ubuntu1, 1.2.4-1ubuntu1.1), libbind9-90:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), winbind:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), switchboard-plug-locale:amd64 (0.2.0.2~r179~daily~ubuntu0.3.2.1, 0.2.0.2~r180~daily~ubuntu0.3.2.1), onboard-data:amd64 (1.0.0-0ubuntu4+elementary4~ubuntu0.3.1, 1.0.1-0ubuntu1+elementary7~ubuntu0.3.2.1), switchboard-plug-users:amd64 (0.1.2.2+r219~daily~ubuntu0.3.2.1, 0.1.2.2+r222~daily~ubuntu0.3.2.1), cpio:amd64 (2.11+dfsg-1ubuntu1.1, 2.11+dfsg-1ubuntu1.2), thunderbird:amd64 (38.5.1+build2-0ubuntu0.14.04.1, 38.6.0+build1-0ubuntu0.14.04.1), firefox:amd64 (44.0.2+build1-0ubuntu0.14.04.1, 45.0+build2-0ubuntu0.14.04.1), samba:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), pantheon-calculator:amd64 (0.1.0.1+r201+pkg9~daily~ubuntu0.3.2.1, 0.1.0.1+r206+pkg9~daily~ubuntu0.3.2.1), chromium-codecs-ffmpeg-extra:amd64 (48.0.2564.82-0ubuntu0.14.04.1.1108, 48.0.2564.116-0ubuntu0.14.04.1.1111), switchboard-plug-a11y:amd64 (0.1+r41~daily~ubuntu0.3.2.1, 0.1+r42~daily~ubuntu0.3.2.1), libnuma1:amd64 (2.0.9~rc5-1ubuntu3.14.04.1, 2.0.9~rc5-1ubuntu3.14.04.2), pantheon-files:amd64 (0.2.4+r2062+pkg48~daily~ubuntu14.04.1, 0.2.4+r2086+pkg48~daily~ubuntu0.3.2.1), flashplugin-installer:amd64 (11.2.202.569ubuntu0.14.04.1, 11.2.202.577ubuntu0.14.04.1), usbutils:amd64 (007-2ubuntu1, 007-2ubuntu1.1), libperl5.18:amd64 (5.18.2-2ubuntu1, 5.18.2-2ubuntu1.1), dnsutils:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), xul-ext-calendar-timezones:amd64 (38.5.1+build2-0ubuntu0.14.04.1, 38.6.0+build1-0ubuntu0.14.04.1), base-files:amd64 (7.2ubuntu5.3+elementary17~ubuntu0.3.1.1, 7.2ubuntu5.4+elementary18~ubuntu14.04.1), ifupdown:amd64 (0.7.47.2ubuntu4.3, 0.7.47.2ubuntu4.4), samba-dsdb-modules:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), libpixman-1-0:amd64 (0.30.2-2ubuntu1, 0.30.2-2ubuntu1.1), libnss-winbind:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), chromium-browser-l10n:amd64 (48.0.2564.82-0ubuntu0.14.04.1.1108, 48.0.2564.116-0ubuntu0.14.04.1.1111), libnss3-nssdb:amd64 (3.19.2.1-0ubuntu0.14.04.2, 3.21-0ubuntu0.14.04.2), lsb-base:amd64 (4.1+Debian11ubuntu6+elementary5~ubuntu0.3.1, 4.1+Debian11ubuntu6+elementary6~ubuntu0.3.2.1), switchboard-plug-datetime:amd64 (0.1.0.2-0~117~daily~ubuntu0.3.2.1, 0.1.0.2-0~119~daily~ubuntu0.3.2.1), samba-common-bin:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), lsb-release:amd64 (4.1+Debian11ubuntu6+elementary5~ubuntu0.3.1, 4.1+Debian11ubuntu6+elementary6~ubuntu0.3.2.1), lsb-core:amd64 (4.1+Debian11ubuntu6+elementary5~ubuntu0.3.1, 4.1+Debian11ubuntu6+elementary6~ubuntu0.3.2.1), perl-modules:amd64 (5.18.2-2ubuntu1, 5.18.2-2ubuntu1.1), samba-libs:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), switchboard:amd64 (2.0.2~r600+pkg45~daily~ubuntu0.3.2.1, 2.0.2~r608+pkg45~daily~ubuntu0.3.2.1), thunderbird-gnome-support:amd64 (38.5.1+build2-0ubuntu0.14.04.1, 38.6.0+build1-0ubuntu0.14.04.1), libpantheon-files-widgets0:amd64 (0.2.4+r2062+pkg48~daily~ubuntu14.04.1, 0.2.4+r2086+pkg48~daily~ubuntu0.3.2.1), libjasper1:amd64 (1.900.1-14ubuntu3.2, 1.900.1-14ubuntu3.3), ca-certificates:amd64 (20141019ubuntu0.14.04.1, 20160104ubuntu0.14.04.1), libnss3:amd64 (3.19.2.1-0ubuntu0.14.04.2, 3.21-0ubuntu0.14.04.2), midori-granite:amd64 (0.5.11+r7102+pkg52~ubuntu0.3.2.1, 0.5.11+r7109+pkg52~ubuntu0.3.2.1), libgnutls26:amd64 (2.12.23-12ubuntu2.4, 2.12.23-12ubuntu2.5), libgnutls26:i386 (2.12.23-12ubuntu2.4, 2.12.23-12ubuntu2.5), smbclient:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), libpantheon-files-core0:amd64 (0.2.4+r2062+pkg48~daily~ubuntu14.04.1, 0.2.4+r2086+pkg48~daily~ubuntu0.3.2.1), xul-ext-lightning:amd64 (38.5.1+build2-0ubuntu0.14.04.1, 38.6.0+build1-0ubuntu0.14.04.1), switchboard-plug-pantheon-shell:amd64 (0.2.2.1+r425~daily~ubuntu0.3.2.1, 0.2.2.1+r432~daily~ubuntu0.3.2.1), switchboard-plug-applications:amd64 (0.1.0.2+r130~daily~ubuntu0.3.2.1, 0.1.0.2+r132~daily~ubuntu0.3.2.1), contractor:amd64 (0.3.1~r137+pkg22~daily~ubuntu0.3.1.1, 0.3.1~r138+pkg22~daily~ubuntu0.3.2.1), lsb-invalid-mta:amd64 (4.1+Debian11ubuntu6+elementary5~ubuntu0.3.1, 4.1+Debian11ubuntu6+elementary6~ubuntu0.3.2.1), libswitchboard-2.0-0:amd64 (2.0.2~r600+pkg45~daily~ubuntu0.3.2.1, 2.0.2~r608+pkg45~daily~ubuntu0.3.2.1), libpam-winbind:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), lsb-security:amd64 (4.1+Debian11ubuntu6+elementary5~ubuntu0.3.1, 4.1+Debian11ubuntu6+elementary6~ubuntu0.3.2.1), openssl:amd64 (1.0.1f-1ubuntu2.16, 1.0.1f-1ubuntu2.18), libwbclient0:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), samba-vfs-modules:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), switchboard-plug-useraccounts:amd64 (0.1.2.2+r219~daily~ubuntu0.3.2.1, 0.1.2.2+r222~daily~ubuntu0.3.2.1), linux-libc-dev:amd64 (3.13.0-77.121, 3.13.0-79.123), glib-networking-services:amd64 (2.40.0-1, 2.40.0-1ubuntu0.1), samba-common:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), chromium-browser:amd64 (48.0.2564.82-0ubuntu0.14.04.1.1108, 48.0.2564.116-0ubuntu0.14.04.1.1111), glib-networking:amd64 (2.40.0-1, 2.40.0-1ubuntu0.1), switchboard-plug-about:amd64 (0.2.0.1+r361~daily~ubuntu0.3.2.1, 0.2.0.1+r366~daily~ubuntu0.3.2.1), opera-stable:amd64 (35.0.2066.68, 35.0.2066.92), libisccc90:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), onboard:amd64 (1.0.0-0ubuntu4+elementary4~ubuntu0.3.1, 1.0.1-0ubuntu1+elementary7~ubuntu0.3.2.1), libsmbclient:amd64 (4.1.6+dfsg-1ubuntu2.14.04.12, 4.1.6+dfsg-1ubuntu2.14.04.13), libisc95:amd64 (9.9.5.dfsg-3ubuntu0.7, 9.9.5.dfsg-3ubuntu0.8), audience:amd64 (0.1.0.2+r571-0+pkg22~daily~ubuntu0.3.2.1, 0.1.0.2+r575-0+pkg22~daily~ubuntu0.3.2.1), xul-ext-gdata-provider:amd64 (38.5.1+build2-0ubuntu0.14.04.1, 38.6.0+build1-0ubuntu0.14.04.1), switchboard-plug-security-privacy:amd64 (0.1.0.2-0~201~daily~ubuntu0.3.2.1, 0.1.0.2-0~212~daily~ubuntu0.3.2.1)
End-Date: 2016-03-12 08:45:06
minuteman@minuteman-ThinkPad-T400:~$ switchboard
[INFO 08:53:11.799686] Application.vala:155: System Settings version: 2.0
[INFO 08:53:11.799763] Application.vala:157: Kernel version: 3.13.0-79-generic
[WARNING 08:53:11.836442] PluginManager.vala:115: Unable to scan plugins folder: No such file or directory
[INFO 08:53:11.843935] Tweaks.vala:307: Activating Tweak plug
[WARNING 08:53:11.930786] PlankSettings.vala:204: Key file contains key 'Monitor' in group 'PlankDockPreferences' which has a value that cannot be interpreted.
[ERROR 08:53:13.931912] [GLib-GIO] Settings schema 'org.gnome.settings-daemon.plugins.power' does not contain a key named 'ambient-enabled'
Trace/breakpoint trap (core dumped)
Status changed to 'Confirmed' because the bug affects multiple users.