Always happens on ebooks with pictures, presumably because the picture is a link rather than imported into the book; the Sony freezes trying to follow the link.
It might happen with other weird coding or links; I haven't found it consistent enough to figure out what files have problems.
Sony has a limit on the size of HTML it can deal with inside the epubs, but if they're using Calibre as the conversion engine, it'd automatically split them into smaller-than-300kb pieces.
Re: AO3 bug with epub files?
Always happens on ebooks with pictures, presumably because the picture is a link rather than imported into the book; the Sony freezes trying to follow the link.
It might happen with other weird coding or links; I haven't found it consistent enough to figure out what files have problems.
Sony has a limit on the size of HTML it can deal with inside the epubs, but if they're using Calibre as the conversion engine, it'd automatically split them into smaller-than-300kb pieces.