So I'd been uploading epubs without problem, including one just an hour or so earlier, and now I get an 'unrecoverable error' message on the latest. I've no idea what might cause that nor how to fix it.
Well, never mind. If I just go back to the upload page and hit save it lets me carry on.
Indeed. Anything can cause it, even a knot in a wire somewhere, just have another go.
I have my epub formatted properly with Heading 1,2,3, etc, but it will not convert at Lulu. (unknown error) I tried another converter and end up with no table of contents. This is a revision of an epub that converted successfully about 4 years ago. Anybody know of a good converter I can try, or any suggestions?
I am creating a support case for you with our team so that we can determine why it's not converting.