problema no index.aspx no servidor

Galera, fiz um site que a página inicial dele chama-se index.aspx, nele contém um newsletter onde o usuário coloca o seu e-mail. O problema é que quando coloco no servidor ele da o seguinte erro:Server Error in '/' Application.--------------------------------------------------------------------------------Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] System.Web.UI.WebControls.ImageButton.add_Click(ImageClickEventHandler value) +7 index.TWebForm1.InitializeComponent() index.TWebForm1.OnInit(EventArgs e) System.Web.UI.Control.InitRecursive(Control namingContainer) +240 System.Web.UI.Page.ProcessRequestMain() +197 --------------------------------------------------------------------------------Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET Version:1.1.4322.2300 Alguém saberia qual a solução para esse tipo de problema???Valeww!!!! :)