register kindle ebook - Dreamweaver the Missing Manual

I am unable to upgrade my Dreamweaver CS5.5: The Missing Manual ebook with my Kindle. I purchased the ebook through When I try to upgrade with the Kindle I keep getting error messages AND I can't seem to register this ebook on the O'Reilly Web site.

1. How can I register my ebook with O'Reilly?
2. How can I upgrade my purchased ebook?
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