You're trying something that's not going to work. SONY's Reader Library is
independent - and not compatible with ADE's library, even though there may
be .epub files in both. Sorry!
I'm having exactly the same problems. Been talking to Sony and Adobe for four days! Is frustrated in AZ right do you think? I've been told that this is a technical problem, customer service cant help and I should open a Technical Webcase (which is chargeable).