I had the same problem. Install dbus-x11 to resolve it. I think that there should probably be a dependency on dbus-x11 by f-spot. The problem is that without dbus-x11 installed the DBUS_SESSION_BUS_ADDRESS variable is empty. With the empty variable, f-spot doesn't know how to find the session bus.
$ env |grep dbus DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-ZvZLnHIH6V,guid=008017166bdeda5072adf400476f38bf -- An unhandled exception was thrown: Unable to open the session message bus. https://bugs.launchpad.net/bugs/89832 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs