I've had some customers indicate they were having problems checking out, that they are directed back to the home page rather than checking out. One recently happened and the event log logged a postback error, which I will post below, but one thing I noticed was that the browser information for the customer included "FunWebProducts" - which I did a search for and a lot of places are saying it is "spyware" -- so I'm wondering if that is throwing the error somehow. Anyone heard of the issue?


Here is the error:



Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> 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 System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.WebControls.TextBox.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) ]