I have the latest version of XDCAM Transfer and am running Lion with FCP6. I'm using the XDCAM transfer software within FCP using File>Import>XDCAM. I'm using firewire coming out of my PDW700 with no communication problem. I think the settings are incorrect in my Preference pane as I get 5 clips imported when I'm only picking one. They have sequential numbers after the clip name also.
This is what the imported clips look like in my Browser,