Wondering if anyone has encountered this... I have a book which was converted to a DRM free PDF format so that I could share selections with my students... When I try to drag pages out of it to create a new document (using Mac Preview) the pages in the new document are all blank.
I even tried it where I extracted them using a different program and at first they would open in Preview and I could read it, but then the next day when I opened it again the pages were blank.
Any knowledge/theories/advice?
P.S. This is my first post on this forum, I hope I haven't violated any rules or norms, please forgive me if I did.