All I've seen are people who suggested archive and unarchive and for some that worked.
Did you restart your Nook before unarchiving?
Here's something that might work
1) Get Nook for PC App.
2) Download book via Nook for PC App.
3) Transfer over to Nook.
4) You'll have to enter your last 4 digits of credit card to access on HD. Then it should work.
I'll give that a shot. Might be tomorrow until i can do it, but I'll try it and let you know. Also, yep the restart was the first thing i tried.
Well, somehow I got it fixed, but I really can't say how. The only thing I can think of is right before I bought it last night I had set a device passcode. I don't know if that had any effect with respect to security permissions, but I just disabled it, repurchased the book from the shop, did the archive/unarchive deal, and the book opened like normal on all devices...the HD, nook tablet, and the android app. I just got off the phone with Nook support and they agreed to refund the first purchase. Couldn't ask for more, so, problem solved. Thanks guys for your prompt input and suggestions. Much appreciated.