[Ethan Holmes]

Does anyone know what the following gobbledygook means. It is the only message I received upon running my novel through Smashwords' recommended epub check. Suddenly after a year of sales Apple says my book is not good enough in its current epub format. Huh?

This is what I received:
ERROR: earths-blood.epub/tmp_af7e6e36650d4b06688430391833559a_cJg63I.ch.fix ed.fc.tidied.stylehacked.xfixed_split_000.html(18) : attribute "clear" not allowed here; expected attribute "class", "id", "style" or "title"

Thanks for any aid. EH