phablet@ubuntu-phablet:~$ pkcon -v --allow-untrusted install-local html5-weibo.ubuntu_0.1_all.click 
21:23:35        PackageKit          Verbose debugging enabled (on console 1)
21:23:35        PackageKit          filter=(null), filters=0
21:23:35        PackageKit          adding state 0xb7caad00
21:23:35        PackageKit          doing install files
21:23:35        PackageKit          role now install-files
Installing files              [                         ] (0%)  21:23:35        PackageKit          notify::connected
                              [                         ] (0%)  21:23:35        PackageKit          using frontend dialog
21:23:35        PackageKit          using socket in /tmp/gpk-8_bbeccddb.socket
                              [=========================]         
Finished                      [                         ] (0%)  21:23:35        PackageKit          role now install-files
                              [=========================]         
Installing files              [                         ] (0%)  21:23:35        PackageKit          skipping as the same
21:23:35        PackageKit          using frontend dialog
21:23:35        PackageKit          using socket in /tmp/gpk-9_bbeceadc.socket
                              [=========================]         
Waiting for authentication    [=========================]         
Starting                      [=========================]         
Finished                      [                         ] (0%)  21:23:36        PackageKit          remove state 0xb7caad00
                              [=========================]         
Fatal error: /home/phablet/html5-weibo.ubuntu_0.1_all.click failed to install.
Cannot install /home/phablet/html5-weibo.ubuntu_0.1_all.click: Signature verification error: debsig: /home/phablet/html5-weibo.ubuntu_0.1_all.click does not appear to be a deb format package