Converting to jpeg is not working

Since the latest issue of LR 11.0 you  are not able to generate a jpeg from the Book Module.  I had created a Blurb book and then also wanted to create a jpeg.  When I went to do this it reconfigered my book and it looked nothing like what I had created.  It acted as if I wanted to change the book size.  We never had this problem in the previous editions.