We use DevExpress GridViews in our custom modules. When the user tries to filter or sort the grid after the session has expired we get the following error:System.ApplicationException: Response.Redirect cannot be called in a Page callback.at System.Web.HttpResponse.Redirect(String url, Boolean endResponse, Boolean permanent)at System.Web.UI.Page.HandleError(Exception e)at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)at System.Web.UI.Page.ProcessRequest()at System.Web.UI.Page.ProcessRequest(HttpContext context)at ASP.default_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\47f0553d\bfdf482e\App_Web_cq3e11v3.0.cs:line 0at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)I've read that calling Response.Redirect is not possible when performing a callback, but I do not know how to implement my custom redirection when the user is not logged in or does not have the permission to refresh the grid.DevExpress recommends to use their redirect method in case of a callback (see for example http://www.devexpress.com/Support/Center/p/Q100415.aspx). Is there a way to hook into DNNs redirect logic and call my custom redirect methods?Thanks in advance,Jan