I scanned my sheet music to load onto an iPad. I scanned the cover in color, then scanned the pages in b&w, then combined the two with Adobe Acrobat. Preview on MacOS reads these files fine, but the PDF viewer on iOS displays the cover page only. If I try to scroll into the music, it briefly flashes the page and then goes back to the cover page. After doing this about 5 times, it gives up and shows a black screen - won't even display the cover page. My iPad is up-to-date.<p>Now I have around 350 books of music that I can't view on an iPad. A lesson learned: when doing a large project like this, run some things all the way through the pipeline first to make sure it will work. I just assumed PDF viewing was not a big deal.