Running:
Visual Studio 2005 8.0.50727.42
.NET Framework 2.0.50727

In the downloadable code, I'm getting identical errors for all of the Rss files in Chapter 5, which include:

GetArticlesRss.aspx
GetProductsRss.aspx
GetThreadsRss.aspx

Each file appears to have the same errors, which are numerous.

For a clue, if I comment out the <asp:Repeater> code, and everything contained within it, I still get the following (3) errors for the GetArticlesRss.aspx file, and identical errors for the other (2) Rss files:

Error 103 Validation (): Element 'html' occurs too few times. C:\ASP.NET 2.0 web sites\TheBeerHouse\TBH_Web\GetArticlesRss.aspx 31 3 C:\...\TBH_Web

Error 104 Validation (XHTML 1.0 Transitional): Element 'head' must be included within a parent element. C:\ASP.NET 2.0 web sites\TheBeerHouse\TBH_Web\GetArticlesRss.aspx 4 2 C:\...\TBH_Web
Error 105 Validation (XHTML 1.0 Transitional): Element 'title' occurs too few times. C:\ASP.NET 2.0 web sites\TheBeerHouse\TBH_Web\GetArticlesRss.aspx 4 2 C:\...\TBH_Web
Perhaps this is causing the other bugs.

You will get those errors because the aspx page is not structured the way that the compiler likes it to be. In this case it is telling you that the html, head and title elements are missing.

However, run-time compile doesn't produce the errors because the page produced is recognized as an XML page.

Thanks , MythicalMe, for the accurate and concise reply. I guess we just have to see those compiler error messages all the time. I'm guessing it's probably not a good idea to turn off those error messages (not sure yet how or if I can do that), since the compiler might flag something else that truly needs to be fixed, which the run-time will not ignore.

No other clean solution for this problem?
As a programmer, it's difficult to see a lot of errors in the solution...
Do we really have to see those ugly compiler messages?