caffeine works but not for quodlibet on 12.04

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http://askubuntu.com – I have caffeine installed, and it works just fine in gnome-classic (no effects) for preventing sleeping for most processes. For example "vlc", "mplayer", and "totem" all work. I cannot get it to recognize quodlibet. It used to work in Lucid, but after a recent upgrade, it doesn't work. I have tried qoudlibet and python /usr/bin/quodlibet and /usr/bin/quodlibet as the process name, and none of them work. Any ideas? (HowTos)