Can anyone help with this issue, is there a quick fix all cross refs are now missing in chapters in the book. I am starting a new book and will have to update manually but this is a lot of unnecessary work as I have many books with cross reference chapters.
The best advice is probably to go back and finish the book in the version you started in.
Thanks for your reply but unfortunately 2014 is deleted as part of the 2015 installation.
I have had to start a new book adding one chapter at a time and saving in between and it has found the cross refs now. The problem seems to be with the book file.