While doing a final check of the samples I noticed an error in
Chapter 3, on the first Try It Out. Where it says to open the site at C:\BegASPNet2\Chapters\Begin\Chapter03, it should say C:\BegASPNet2\Chapters\Begin\Chapter03\Samples - ie, just adding the \Samples directory onto the end.
Wrox will update an official errata page and there will also be an errata page on the Wrox United site, but I thought it best to post it here as the other methods will take time to put in place.
Oh, and you can blame me for this one. Sorry.