Well, I'll be jiggered: there I was, all motivated, roaring through the typos and corrections, when I realised that the footnotes were all missing! I've had to stop as the pages will all change again. I have written to the scanner chap in emergency-style and must now wait to see how they can be retrieved.
There also appear to be spelling errors which are not in the book: I saw from his email that he had made alterations.. I am not too happy about this. Monster task made monsterer as I will have to re-check everything.