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As Crimson Wise said, the ebook we created mistakenly starts near the end of the book on some ereaders, where the color images were. This was due to a minor quirk in how those readers determine what the first page of the ebook should be and is related to the fact that JNC moved the color images in the back a couple years ago.
The premium ebook has been updated (v1.0.1), and we are in the process of uploading the update to the webstores as well.