http://blog.csp.uwa.edu.au/tim/archive/2007/07/20/good-error-reporting-for-asp-net-websites-with-ms-ajax.aspxA requirement in many ASP.Net web applications out there is that you the developer know when your website breaks, the usual way was to use the Application_Error event and then send your self an email or write to a log file. With the event of AJAX itergrationenCommunityServer 2.1 SP2 (Build: 61129.2)