You could try to use libqyoto from the repositories for Natty (see <http://packages.ubuntu.com/search?suite=all&searchon=names&keywords=qyoto>, choose the "natty-upgrades" series if present, otherwise just choose "natty"), since it seems that libqyoto was removed from Oneiric repositories. Try it and tell me if that works.
You could try to use libqyoto from the repositories for Natty (see <http:// packages. ubuntu. com/search? suite=all& searchon= names&keywords= qyoto>, choose the "natty-upgrades" series if present, otherwise just choose "natty"), since it seems that libqyoto was removed from Oneiric repositories. Try it and tell me if that works.