Not getting CalendarExtender popup

I added a CalendarExtender to my page for a TextBox but when I click on the TextBox the calendar is not popping up and I get no error. The only thing different on this page than on others that are working fine is that this page also has an UpdatePanel on another part of the page.  Below is what is at the top of the page and below that is the TextBox markup.  Any help is appreciated.

Below is under the Page declaration.<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

Inside the form control is below

    <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

The Textbox markup is below inside a FormView

<asp:TextBox ID="txtScheduledInDate" runat="server" Width="72" Text='<%# Bind("ScheduledInDate", "{0:d}") %>'></asp:TextBox><asp:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="txtScheduledInDate"></asp:CalendarExtender>