I would like to know how to transfer a book from a computer to another one?
Only a suggestion to try! May or May NOT work for you, give it a go!
(Presuming you have LR installed on both computers)
Open the book in the Book module in Computer-1 (and Create a Saved Book, if not already done.)
Select all the images in the Film-strip under the Book design window.
Goto Menu: File > Export as Catalog. (Include Negative files!)
Copy the exported catalog to Computer-2 and open it there.
Thank's for the tip,it works.Once the catalog exported,I can open it in any other computer with Lr installed.
Have a nice day.