I have a Nook Simple Touch with Glow Light and having been using it for Overdrive library books for well over a year without problems. With ADE 4 and now 4.03, I cannot open borrowed library books. I always get an error message on the Nook that states "This book has been returned. Loan not on record." I am running ADE on a new Toshiba SS55-B5280 laptop running Windows 8.1 with all updates current. The librarybooks are properly checked out and open on the Toshiba PC for reading without problem. The do not, however, open on the Nook.
In case anyone is interested, I'll reply to my own post. I tried everything that Adobe, Overdrive and B&N suggested. None of it worked. Finally, I did what a couple of people tried and uninstalled ADE 4.5 and installed ADE 3.0. An added benefit is that with ADE 3.0 you can still drag a book from ADE to your Nook instead of just right clicking and clicking the copy to Nook option which seems to be required by ADE 4+. Finally, after months of frustration, the two Nook Simple Touches with Glowlight work fine with ADE. The problem is that ADE 4+ is just not compatible with Nook 1.2. A major screw-up by both and by Overdrive. All are aware of the problem and not one of them has done anything to fix it.
Tjanks. I'm having same problem. I will try that.