Originally Posted by cybmole
you cannot edit a file in sigil while it is open for reading in any other app: ADE, Calibre..., Sony.. AFAIK. Even if you could, it is asking for trouble! because as soon as you save the edit, then the open-for-reading copy is no longer the same as your saved work.
Now certainly this seems to conflict with mrmikel's thought and I am really pretty new and am pretty scared by cybomole's warning and I am not "asking for trouble."
But what's the deal? Is it okay to do the proofreading/editing the way mrmikel suggests? (Personally I can't see what the trouble might be. Like mrmikel said, 'the sony reader doesn't hold the file when it's in the list mode.'