iSync 2.2 and SonyEricsson S700i

After installing the update 10.4.6 on my PB G4 1.5GHz; I could not sync my mobile phone SonyEricsson S700i using iSync 2.2. I tried it several times but every time just at the end of the sync process it gives a message "Error [S700i] There was an error pushing some changes to the phone. The synchronization may have been cancelled on the phone". I tried to solve the problem by deleting and re-installing the phone, deleting the preference file for iSync but I always get the same error message.
Any suggestions ?

PB G4 1.5 GHz Mac OS X (10.4.6)