I downloaded the Dickens ebook, and the text doesn't show in my Boox, and neither in Adobe Digital Editions. I ran it through epubcheck and it gave tons of errors. It would open in Sigil and when I saved it without making a single change, the new file opened in both ADE and the Boox. It also gives significantly fewer errors in epubcheck.
I looked into the file, and it appears that all HTML files have a line like:
Quote:
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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which is incorrect in XHTML (it should contain a / before the closing >). Inserting these solves the problem.
So it seems some of the Adelaide epubs are sloppy. At least the Dickens book is available here on MR, and probably in a much nicer format.