Have been updating my wife's TomTom One(v3) and have an issue with the voice she uses!

Prior to the upgrade, she has used the Justin Moorhouse voice.

I have installed NavCode 9.510 and a new map.

Then I copied over 2 voices......
Justin Moorhouse (data84)
Billy Connelly (data93)

....ran FastActivate and fired up the TT.

However, when I go to change the voice, only one of them (Billy C) is in the list. There is no sign of the Moorhouse voice.

Anyone got any ideas what's wrong or what I could try?