Hi,

I use nested master pages. On a content page I dropped some ASP.NET
controls. The page and the contols work but VS.NET reports an error for each
<asp:...> server control:

Error 1 Unrecognized tag prefix or device filter 'asp'. ´

This is how the content page looks like:

<%@ Page Language="C#" MasterPageFile="~/Contentpage.master"
AutoEventWireup="true" CodeFile="Pwd.aspx.cs" Inherits="Pwd" Title="Change
Password" %>
<asp:Content ID="Content5" ContentPlaceHolderID="_cpMiddleContent"
Runat="Server">
<asp:changepassword runat="server" ID="_cpChange"></asp:changepassword>
</asp:Content>

Contentpage.master has Main.master as Master Page.

I do not recieve this error if I use an ASP.NET control in
Contentpage.master.

What's wrong here?

Markus