> FYI, here is my minimal sample file for this issue to reproduce this "bug".
Indeed, here it somehow detects html and then it barfs, even when doing ebook-convert .. In this case ebook-convert test.txt test.epub --formatting-type=plain is necessary and succeeds in properly converting the book. Best Norbert -- PREINING Norbert https://www.preining.info Accelia Inc. + IFMGA ProGuide + TU Wien + JAIST + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13