export book in PDF

"An error occurred while adding text and fonts to the book"-

You may need to re-edit your old Saved Book Collections to allow a PDF result.

Book problems can be hard to diagnose, so I insert below some notes I have accumulated from other forum threads in the past- Experiment with a COPY of your book and work your way through them and  until you find the problem. Good luck.

 First- Duplicate the Saved Book Collection in the collections panel- and experiment with the copy.

- Top Menu: Edit > Select all Text Cells (or Ctrl+Alt+A), then reset the font in the Text Panel using a commonly used font that Lightroom-Classic lists (not Times New Roman) and reasonable text size. Also change all the text to one font, then change it back to another. ie. two changes to the font (globally)- this may be helpful. Using multiple font types in the book- I suggest not doing that.

- Check that any text boxes do not have text that exceeds the available size of the text box. ie. some of the text has disappeared from the text cell. Lightroom will not 'carry-over' text to the next cell like some publishing programs but simply does not show the words that exceed the cell size. (This will error).

- Top Menu: Edit > Book Preferences > place a check mark in-  "Constrain Captions to text safe areas"

- Testing Fonts- Create a test book with a few sample pages with the fonts you plan to use, and make sure the test book can successfully be saved as a PDF without generating an error message. This verifies that the fonts you plan to use are compatible.

- If you get an error in your book, you can find the page that contains incompatible text font  by clicking on the progress bar on the upper left while you are saving to PDF. An information box appears, showing the pages saved from front to back. Waiting for this is tedious, but it will show you the page that is trying to be saved when the incompatible font is encountered. Go to that page in your book (and perhaps the pages before and after, just to be sure) and look for the offending font. Here’s how to find it:

>Look at the page text and photo text (and text boxes on page templates that include text boxes).

>Select all the text in these areas to ensure that all the fonts are compatible, and that no incompatible fonts have found their way into your text.

- Empty text boxes can generate this error message if they are formatted to use an incompatible font. Remove any page and photo text box that is empty.