I can't save no more my reviews of each disc. I can set the various audio/video etc. points but than after clicking OK the values are not saved and do not shows up.

Found a temporary solution that seems to work. Instead of double clicking the profile from your list and the selecting personalise to rate the movie try just highlighting it ie click once then right click on it then from the menu that appears choose personalise from there. No idea why but if you do it this way it saves your rating ok.