It appears to be because of the redirect from <a href="http://digitalmars.com/d/2.0/*">http://digitalmars.com/d/2.0/*</a> to <a href="http://www.d-programming-language.org">http://www.d-programming-language.org</a> and the D site doesn't have the actual ebook hosted.<div>
<br></div><div>Regards,</div><div>Brad Anderson</div>