I have to confess that I gave up with this one and sent it to a friend of mine who has VAS to see if a software update would cure the fault. It didn't and on further investigation it turned out that there was a disconnected earth wire in the scuttle near the ECU. When this was reconnected, he was able carry out the adaptions no problem and all was well. Needless to say, I was a little pee'd off as I should of found this!