When I try to run the Main.MasterPage in "Try It Out—Layout and Login Controls", I receive the error message "'ContentPlaceHolder1' is not a valid identifier". I am not able to get rid of this error message. I have even tried copying the code straight from the book, same results.

here's the code:
<asp:contentplaceholder id=" ContentPlaceHolder1"
runat="server">
</asp:contentplaceholder>

When it does run, I get the "Cannot find ContentPlaceHolder1" error.

I am on a Windows 7 64-bit machine. I have VS 2008 and am using visual basic .net.

Help, please...

It looks like you have a space in your id=" ContentPlaceHolder1" it should be id="ContentPlaceHolder1"

Bryan