Thanks for your help, Joe & Imar.

I did create the VD for Chapter 3/WroxUnited folder, but I am still getting this message, the same as PIAS did for Chapter 3. My project in VWD is for c://websites/begin/Chapter3. Plus I am getting other errors such as "file '~/site.master' was not found", "could not find 'mainContent' in the current master page or pages", "element 'news' is not a known element. This can occur if there is a compilation error in the Web site". The default.aspx page for Chapter 3 is not able to display in the browser, either.

I am not getting any such errors for the main WroxUnited project in c://websites/wroxunited, and this default.aspx page is displaying fine in the browser.

Signed, clueless