My company uses Quark 15 to create catalogs. I have created one and all the chapters are in a book (about 80 pages). I go to print book to see how it looks, but the pages do not want to print on both sides of the paper. I have it set in printer settings to print on both sides as well as a printer capable of it. Each chapter will print on both sides but when one chapter ends on the right page the next chapter does not want to print on the other side, it will be blank behind it and print the next chapter on the next right page when it needs to be the left. I have it setup in the individual chapter/project page layout if one ends with a left page the next starts with right.