I have a new computer and new Kobo Clara reader. I installed version 4.5.11 and downloaded an epub. Sometimes it shows up in ADE and sometimes it doesn't. When it does show up, I'm unable to open it or right click on it to add to my Kobo, and ADE freezes. I've also done what some people on here recommended and deauthorized that version, uninstalled it, and installed 3.0. Same issue. In both versions I'm also unable to access my ereader. Both computers are running Windows 10 and I'm wondering if that's the issue. Any suggestions? I don't have access to a computer with an older version of Windows on it.