Maybe it's because it's PreSendRequestContent and you haven't hooked up the event?

+++ Rick ---

>It is said that Application_PreSendContent() should fire before the ASP.NET page framework sends content to a requesting client (browser). This is what I have in the Global.asax:
>
>

>    Sub Application_PreSendContent(ByVal sender As Object, ByVal e As EventArgs)
>        Throw New System.Exception("laasasdf")
>        LXFramework.PreSendContent()
>    End Sub
>

>
>This event does not fire.