Try resetting the Kindle by pressing and holding the power button for 20 seconds. Let me know if it doesn't reset.
So every book is acting in the same way?
This book...but other books as well?
Approximately when was this Kindle purchased?
I would go to Amazon's web page and download the newest firmware. Even if it claims that you have the newest, do it anyway. It sounds the operating system is glitched. Let me know if you need help with it.
I hope it allows you to see it since you're in New Zealand. http://www.amazon.com/gp/help/customer/display.html/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&linkCode=ur2&nodeId=200529680&tag=thcosezo-20&linkId=DYH4KFENMVQP2VBA
You need to locate your specific Kindle and follow the instructions given for manual update through your computer.