Sergio, I tried multiple convert (3 books) from EPUB to MOBI and it was successfully and books opened fine. But I used the latest version of calibre 0.8.51 from this PPA: https://launchpad.net/~bodiltv/+archive/ppa
Sergio, I tried multiple convert (3 books) from EPUB to MOBI and it was successfully and books opened fine. But I used the latest version of calibre 0.8.51 from this PPA: https:/ /launchpad. net/~bodiltv/ +archive/ ppa