I have a page that uses the AJAX ModalPopupExtender to display a popup panel when I click one of the buttons on the page. For the brief second or so that the page is refreshing I can see that the page is grayed out and my popup is displayed as expected. However, it immediately reverts back to the normal state as if I'd never clicked the button in the first place.
Any idea on what could cause this behavior? Below is my Form_Load event.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not IsPostBack Then
Me.SmartNavigation = True