10-25-2013 10:48 PM
I have some books that are stuck in "Processing." I've put up books before and it only takes a day. But these books went up on 10/22 and as of 10/25 are still in Processing.
10-27-2013 02:46 PM
This happens from time to time. (Unfortunately) There's really nothing you can do about it except wait it out or try your hand at emailing NP. You can also try to publish the book again and when the original one finally goes live, simply take it off sale.
It's up to you really.
Hope I helped