I'm finishing a book: 12 chapters. The publisher requires a PDF for the printer and my deadline is tomorrow. I've exported press quality PDFs many times, as recently as two days ago. Now when I export it always hangs on the same page in chapter 10. If I omit that chapter, everything exports fine. If I export that chapter by itself: no problem. Even stranger — I can export the first 12 documents just fine. But then I can export the last last five (including the problem chapter), and they also export just fine.
I even tried building a new chapter by starting with a fresh template and dragging all the text and photographs from the old chapter. Very odd: I exported the whole book and it all worked! But then I made a few minor adjustments, and now even this new fresh document causes the same problem.
Export in two pieces and combine in Acrobat Pro.