Don't worry it now works! I had another application using the same OSC port to send. Hopefully this is useful for other people.
Just checking in again if the Syphon library I posted above solved your issue. It did for a number of other people previously.
@LucieDance the easiest way (no code and no lib install at all) to get Kinect info on mac is to use synapse http://synapsekinect.tumblr.co...
It will pass all the coordinates through OSC. Nimate can be quite annoying to install, here it's already packed in the app.