ColorMunki Device not detected

My ColorMunki calibrator isn't detected correctly by colord. Although the device is plugged in there is no "calibrate" option at the color settings in the Gnome System settings menu. ArgyllCMS itself find the device an offers calibration.
If I start colord in --verbose mode it throws an error about missing modules:
00:29:10 CdUdevClient: failed to load sensor: opening module libcolord_sensor_color-munki.so failed : /usr/lib/i386-linux-gnu/colord-sensors/libcolord_sensor_color-munki.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden
(Last part is german and basically says that the Shared-Object-File can't be opened). The file doesn't exist with this name, there ist just a file /usr/lib/i386-linux-gnu/colord-sensors/libcolord_sensor_munki.so (without the additional _color!). A quick ln -s point to the existing file doesn't help, but the error message changes:
00:38:37 CdUdevClient: failed to load sensor: opening module libcolord_sensor_color-munki.so failed : /usr/lib/i386-linux-gnu/colord-sensors/libcolord_sensor_color-munki.so: undefined symbol: cd_sensor_munki_button_state_to_string

Oneiric, 32bit, Gnome 3.2