I have been working hard on making a book in the Lightroom 5 book module for the past 6 months. I am close to being finished, and am doing my final edits. Suddenly, my book is only appearing as a 2 page blank book under the same heading, and has no images showing. When I go to the library, or develope module all the photos are still there, but under book module they are suddenly gone. Please help, as I am starting to panick!
First, are you 100% certain? In Library, double click the book. Does this take you to the "2 page blank book"? I assume yes, but let's be certain.
What version of Lightroom? 5.7 is the latest.
Restore a copy of your catalogue from a recent backup. Go to the book collection in Library, right click it, and choose Export as Catalog. This should create a small catalogue containing your book. Open it, and check it's right - if not, try an earlier backup.
If it's OK, then return to your main catalogue, rename the "2 page blank book" by putting "old" on the end, and use File > Import from Another Catalogue to bring the small catalogue into it. Does this solve the problem?