When I opened the help files that I downloaded from the book's web site I only get the outline in the left panel. The right panel has the message "Navigation to web page was canceled".

I noticed that there is a text box labeled "Current Topic" at the bottom of tghe left panel under the Favorites tab that has the following contents: Excel%202007%20Object%20Model/outline_0.htm. I tried modifying this to give the current path of the file, but that did not help.