I have created a new .one notebook in Outline and have it in Box / WebDAV. Some of the pages are text only, some have a .jpg pasted into them, and some have a .pdf pasted into them. They work perfectly in Outline on my iPad. When I open them in OneNote on my laptop, the text pages sync fine. Only some of the .jpg and .pdf pages sync and display correctly, and many of them simply show a red "x" at the top of the page. When I tried using OneDrive for storage, I get the same problems. I also noticed when I open existing OneNote notebooks from Box / WebDAV, I have the same problems in Outline, except there is an image placeholder in place of the images. Any ideas?