Camorama does not display menu bar

Instead of a menu bar, Camorama just shows "[a BonoboDockItem]" where the menu bar would normally be. It appears that the application cannot find libbonobo.so even though the libbonobo2-0 package is installed. I am running 12.04, upgraded from 11.10. This seems similar to bug 924885 and bug 930622.

Error message from the shell:

billh@billh1:~$ camorama

(camorama:7342): libglade-WARNING **: Could not load support for `bonobo': libbonobo.so: cannot open shared object file: No such file or directory

(camorama:7342): libglade-WARNING **: Could not load support for `bonobo': libbonobo.so: cannot open shared object file: No such file or directory

(camorama:7342): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(camorama:7342): libglade-WARNING **: unknown property `allow_floating' for class `BonoboDock'

(camorama:7342): libglade-WARNING **: unknown widget class 'BonoboDockItem'

(camorama:7342): GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `BonoboDockItem'

(camorama:7342): Bonobo-CRITICAL **: bonobo_dock_item_set_behavior: assertion `BONOBO_IS_DOCK_ITEM (dock_item)' failed

(camorama:7342): GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `BonoboDockItem'

(camorama:7342): GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `BonoboDockItem'

(camorama:7342): Gtk-CRITICAL **: IA__gtk_check_menu_item_set_active: assertion `GTK_IS_CHECK_MENU_ITEM (check_menu_item)' failed

(camorama:7342): Gtk-CRITICAL **: IA__gtk_check_menu_item_set_active: assertion `GTK_IS_CHECK_MENU_ITEM (check_menu_item)' failed

billh@billh1:~$ sudo apt-get install libbonobo2-0
Reading package lists... Done
Building dependency tree
Reading state information... Done
libbonobo2-0 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.