I'm still unable to kill a working conversion. It usually works the first time after I install a newer version then it quits. What's weird is I can now kill any waiting book. It used to kill only the working item and the others waiting books error'ed stating you can't kill a waiting book. It almost seems like something is backwards. I would prefer to be able to kill/remove any book working or waiting for conversion. But if I can only have one or the other, I prefer to be able to kill the working book, that way I don't have to close and reopen the application. I hope this makes sense