I'm running the latest Tiger 10.4.1 on a powerbook and iSync 2.0 and have a P900. I have managed to get the iSync Agent software onto the P900 but when I try to sync contacts and calenders, I get a 'Synchronization Failed' message on the computer - 'Cannot connect to the device' etc. and another message saying 'iSync can't communicate with your phone' and on the phone I get the message 'Program Closed Program Main Reason Code: USER Reason number 11'.
Has anyone fixed this problem. Very frustrating!