Atlas UpdatePanel in a user control

[John]

I'm trying out the March 06 CTP of Atlas. My user controls containing
updatepanel's won't render on the containing page at design time (they work
fine at run time!!). Eg simple user control like:

<%@ Control Language="C#" AutoEventWireup="true"
CodeFile="TestUserControl.ascx.cs" Inherits="TestUserControl" %>
<atlas:UpdatePanel ID="UpdatePanel1" runat="server">
<contenttemplate>
<asp:textbox runat="server" id="MyTextBox" />
</contenttemplate>
</atlas:UpdatePanel>

Control at design time - renders fine
Containing page at design time - "Error rendering control - object reference
not set to an instance"
Containing page at run time - renders fine.

Any ideas? Thanks,

John

[ElronVel]

Is it possible to move the UpdatePanel into the containing page instead
of putting UpdatePanel on each of your user control?

-ElronVel