Hi Angus,

Just out of curiosity did you press on the the update for the operating system or the application when you started the update process...?

If you clicked on updating the application, you just need to go back and update the operating system.

The whole update process should work ok just by updating the operating system... no need to click on any other update buttons.

Also - just double check your audio settings in the audio menu in case your volume is down too low and you simply are unable to hear the sounds.