I have book that I've previously sent to Blurb several times, which is now saying that now says that "an error occurred when adding texts and fonts to the book" and won't upload. All I've done is made a few minor adjustments to the text on the spine and at the back of the book. There was no message at that point to say there was an error.
I have PC with Windows 10 and version 5.7 of Lightroom. Can anyone help me please? It is incredibly frustrating and is putting me off using the Book module. Blurb referred me to LightRoom.