hello
when return from a blank shooping cart to home page ( for first time ) in 1.9c
we have a error about post back or call back invalid :
Invalid postback or callback argument. Event validation is enabled using in configuration or in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at .........

plaese help me , what page need edit & need off postback or call back or viewstate ?