Got the same problem on 12.04 64 bits:
jlcv@jlcv-ubuntu:~$ /usr/lib/unity-scope-shotwell/unity-scope-shotwell
/usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
import gobject._gobject
Shotwell database backup: OK
Failed to own name net.launchpad.scope.image.shotwell. Bailing out.
Got the same problem on 12.04 64 bits: unity-scope- shotwell/ unity-scope- shotwell python2. 7/dist- packages/ gobject/ constants. py:24: Warning: g_boxed_ type_register_ static: assertion `g_type_from_name (name) == 0' failed scope.image. shotwell. Bailing out.
jlcv@jlcv-ubuntu:~$ /usr/lib/
/usr/lib/
import gobject._gobject
Shotwell database backup: OK
Failed to own name net.launchpad.