Can authorize ADE, but cannot move ebooks from ADE to reader

I tried several time to de-authorize and the reauthorize and still I can't move a book from ADE to my reader. This only impacts DRM ebooks. I am dealing with a new reader to which I transferred half my ebooks before switching to a new computer. It is in the new computer that I can't make the transfer. The old computer used Vista and the new computer version 10