I have an error while running my asp.net file which using Rad-Controls. I used to create a page with RadTabStrip with the online sample that was in www.telerik.com/help/aspnet/tabstrip/tab_create a wizzard with telerik radtabstrip.html site. But it won't work while running. This page runs with an error "Done, but errors on page".
I need to know what exactly problem this is. Could any body help me?

I use this as my code snippet.
I need to know what exactly problem this is. Could any body help me?
I use this as my code snippet.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RadForCtrl.aspx.cs" Inherits="RadForCtrl" %><%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %><%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title> </head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <div> <telerik:RadTabStrip ID="RadTabStrip1" runat="server" MultiPageID="RadMultiPage1" SelectedIndex="2"> <Tabs> <telerik:RadTab runat="server" PageViewID="PageView0" SelectedIndex="0" Text="Account Info"></telerik:RadTab> <telerik:RadTab runat="server" Enabled="False" PageViewID="PageView1" Text="Address"></telerik:RadTab> <telerik:RadTab runat="server" Enabled="False" PageViewID="PageView2" Text="Subscription"></telerik:RadTab> <telerik:RadTab runat="server" Enabled="False" PageViewID="PageView3" Text="Registration"></telerik:RadTab> </Tabs> </telerik:RadTabStrip> </div> <telerik:RadMultiPage ID="RadMultiPage1" runat="server" SelectedIndex="2"> <telerik:RadPageView ID="PageView0" runat="server"> <asp:Label ID="Label1" runat="server" Text="Title"></asp:Label> <asp:DropDownList ID="DropDownList1" runat="server"> <asp:ListItem>Mr.</asp:ListItem> <asp:ListItem>Mrs.</asp:ListItem> <asp:ListItem>Miss.</asp:ListItem> </asp:DropDownList><br /> <asp:Label ID="Label5" runat="server" Text="First Name"></asp:Label> <asp:TextBox ID="txtFirstName" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtFirstName" ErrorMessage="Frist Name is Required" Display="Dynamic"></asp:RequiredFieldValidator><br /> <asp:Label ID="Label6" runat="server" Text="Second Name"></asp:Label> <asp:TextBox ID="txtSecondName" runat="server"></asp:TextBox><br /> <asp:Label ID="Label7" runat="server" Text="E-Mail"></asp:Label> <asp:TextBox ID="txtMail" runat="server"></asp:TextBox><br /> <asp:Button ID="buttonNextAccount" runat="server" OnClick="buttonNextAccount_Click" Text="Next" /></telerik:RadPageView> <telerik:RadPageView ID="PageView1" runat="server"> PageView2 <asp:Label ID="Label2" runat="server" Text="Hello"></asp:Label> <asp:Button ID="buttonNextAddress" runat="server" OnClick="buttonNextAddress_Click" Text="Next" /></telerik:RadPageView> <telerik:RadPageView ID="PageView2" runat="server"> PageView3 <asp:Label ID="Label3" runat="server" Text="Welcome"></asp:Label><asp:Button ID="buttonNextSubscribe" runat="server" OnClick="buttonNextSubscribe_Click" Text="Next" /></telerik:RadPageView> <telerik:RadPageView ID="PageView3" runat="server"> PageView4 <asp:Label ID="Label4" runat="server" Text="Rad Controls"></asp:Label> <asp:Button ID="buttonNextReg" runat="server" OnClick="buttonNextReg_Click" Text="Next" /></telerik:RadPageView> </telerik:RadMultiPage> </form></body></html>