list_contacts in remote_control.py has wrong signature
The signature of list_contacts in src/remote_control.py is set to av. This breaks nautilus-sendto. It should not be necessary to make the contact dict a variant. See http://bugzilla.gnome.org/show_bug.cgi?id=443484 and https://bugs.launchpad.net/ubuntu/+source/nautilus-sendto/+bug/118475
The signature aa{sv} is more precise.