Application page not working for sharepoint 2013

Hi,

Below is the code for event which on item adding redirects to Application page.

 using (SPWeb owebsite = new SPSite(properties.SiteId).OpenWeb(properties.RelativeWebUrl))
            {
                SPListItemCollection collitems = owebsite.Lists[properties.ListTitle].Items;

                if(collitems.Count > 10)
                {
                    properties.Cancel = true;
                    properties.Status = SPEventReceiverStatus.CancelWithRedirectUrl;
                    string ErrorMessage = "Adding more items are prevented . Count = " + collitems.Count.ToString();
                    properties.RedirectUrl = "http://win-mq3esu10uuj/sites/km/_layouts/15/InductionNew/ExceptionPage.aspx?Error=" + ErrorMessage;
                }
                else
                {
                   base.ItemAdding(properties);
                }
}

The above code was working fine in last sharepoint 2010 project but in sharepoint 2013 

while adding item i only get error "The server was unable to save the form at this time. Please try again." but its not redirected to the ExceptionPage.aspx application page