Originally Posted by HarryT
How could the app display your book if it couldn't "see your material"?
Surely the important point here is that ADE is the "de facto" standard for displaying ePub books. If you're creating eBooks, you must, if you're acting in a professionally responsible manner, test under ADE.
you misunderstood my meaning. adobe state in their terms and conditions that they can access what you open. that was my issue. not any more. Calibre, I have found, meets my needs.