Invalid postback or callback arguement?

Hey, i have a page with a gridview in an update panel, which has a triggered by the user clicking button1, the gridview has a row_command that deletes the data in the gridview, the code worked fine before i added the update panel, but now i tested my page again, i clicked button1, and then tryed to delete the new item in the gridview.

I got the error message "Event validation is enabled using <pages enableEventValidation="true"/> in the config or in the page head.

My page head bit reads :

<%@dotnet.itags.org. Page Language="C#" MasterPageFile="MasterPage.master" EnableEventValidation="true" AutoEventWireup="true" Inherits="Masters_Default2" Title="Untitled Page" %>

But i still get the error,... where am i going wrong? thanks Si!

Have a look at this blog:http://blogs.msdn.com/amitsh/archive/2007/07/31/why-i-get-invalid-postback-or-callback-argument-errors.aspx

-Damien

Make it false and then try...

Let me know what happend