Error XML Parsing Error: not well-formed Location: http://localhost/asp/ Line Number

[dong]

Publish your website on IIS in ASP.NET page: http://msdn.microsoft.com/en-us/libr...=vs.80%29.aspx
1. webvidu asp.net to run in normal mode and programming Publish normal website
2. Publish test their IIS under ASP.NET on IIS website, follow the instructions above also normal
3. When put up IIS and web browser they type in localhost/asp shall be the following error:

XML Parsing Error: not well-formed
Location: http://localhost/asp/
Line Number 1, Column 2:<%@ page theme="Default" language="C#" masterpagefile="~/MasterPage/MasterPage.master" autoeventwireup="true" inherits="webvidu._Default, App_Web_default.aspx.cdcab7d2" %>
-^

I do WinXPSP2 IIS on the operating system, and use vs.net2005 13.0.1 firefox browser

so please fix this bug? thanks