Thanks sjpt! I seem to have hit pay dirt this time!
I tried the second option, the first not working again. I did have a problem reregistering the glo as ADE wasnt seeing it but after powering off and leaving for a few minutes before restarting that did the trick. I have tried one book so far and I can read it on the Glo!
I now have to clear out all the dead copies from when I've been trying but at least looks like success this time.
Thanks for your comments.