My iPad crashes every time I go to open a book that I purchased

Question

I purchased a book from the Barnes and Noble Library. It opened in my Nook App, but I much prefer the iBooks app. I only have four books, and three of them work fine. (One of them is also a Nook book downloaded in a similar way and it works fine.) However, when I try to open this book, it goes to open and then goes back to my main screen. I've tried re-installing iBooks and reinstalling the book itself. Nothing I do seems to be working. I've been reading it in the Nook app, but would like to transfer it over to the iBooks app. Any idea on how to fix this?
P.S. My iPad is not jailbroken

Answer 1

Some books have DRM. Some do not.
You can tell if you view the books in iTunes. Look at the books in List view. In the "Kind" column, you can tell:
"Book" would mean a book without DRM which you loaded into iTunes.
"Purchased book" is a book you bought from the iTunes Store without DRM.
"Protected book" is a book you bought from the iTunes Store WITH DRM.