Please make sure you have latest everything from xenial overlay ppa (looks like maybe your libunity scopes lib or unity-plugin-scopes are outdated); tested with unity-scope-tool and it works here. This is what I have:
ubuntu@ubuntu-xenial:~$ apt-cache policy libunity-scopes1.0 libunity-scopes1.0: Installed: 1.0.7+16.04.20160921-0ubuntu2 Candidate: 1.0.7+16.04.20160921-0ubuntu2 Version table: *** 1.0.7+16.04.20160921-0ubuntu2 500 500 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status 1.0.4+16.04.20160402.4-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages ubuntu@ubuntu-xenial:~$ apt-cache policy unity-plugin-scopes unity-plugin-scopes: Installed: 0.5.8+16.04.20160921-0ubuntu1 Candidate: 0.5.8+16.04.20160921-0ubuntu1 Version table: *** 0.5.8+16.04.20160921-0ubuntu1 500 500 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status 0.5.7+16.04.20160317-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages ubuntu@ubuntu-xenial:~$ apt-cache policy unity8 unity8: Installed: 8.14+16.04.20160922-0ubuntu1 Candidate: 8.14+16.04.20160922-0ubuntu1 Version table: *** 8.14+16.04.20160922-0ubuntu1 500 500 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status 8.12+16.04.20160401-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages ubuntu@ubuntu-xenial:~$ ** Changed in: unity-scopes-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity-scopes-shell in Ubuntu. https://bugs.launchpad.net/bugs/1627600 Title: unity8-dash failed to launch Status in unity-scopes-shell package in Ubuntu: Incomplete Status in unity8 package in Ubuntu: Incomplete Bug description: failed to run unity8-dash on xenial(amd64). gary@ubuntu:~$ unity8-dash --mousetouch [2016-09-26:14:07:25.432] QQmlApplicationEngine failed to load component [2016-09-26:14:07:25.432] file:///usr/share/unity8//Dash/DashApplication.qml:35 Type Dash unavailable file:///usr/share/unity8//Dash/Dash.qml:20 plugin cannot be loaded for module "Unity": Cannot load library /usr/lib/x86_64-linux-gnu/unity8/qml/Unity/libUnity-qml.so: (/usr/lib/x86_64-linux-gnu/unity8/qml/Unity/libUnity-qml.so: undefined symbol: _ZN5unity6scopes18SearchListenerBase4pushERKNSt7__cxx114listISt10shared_ptrIKNS0_10FilterBaseEESaIS7_EEE) ..... gary@ubuntu:~$ apt-cache policy unity8 unity8: Installed: 8.14+16.04.20160922-0ubuntu1 Candidate: 8.14+16.04.20160922-0ubuntu1 Version table: *** 8.14+16.04.20160922-0ubuntu1 500 500 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status 8.12+16.04.20160401-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-scopes-shell/+bug/1627600/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp