Hi out there. I have printed numerous Blurb books from Lightroom but with v.5.7, I can't find an upload to blurb button, and no Books Settings button either. I want to print a revised version which I have had in my library. It is ready to go. I can export it to PDF without problems. There are 42 pages. Any hints appreciated. Baffled now. Have contacted Blurb but here I am, redirected.