I have been having the same issue. It's not the books its the device for me. Because sometimes it loads the book and other times it doesn't. I download from Archive.org too and I have never had an issue with the epubs there. I do realize there are thousands but I have an extensive collection of literature from there on a variety of topics. I have issues with epubs and pdfs mostly, and intermittent problems. I didn't experience problems until I upgraded to 1.9.12 and above.
|