Unhandled error
 - Page: [http://helpdesk.mattressshed.co.uk/Management/Chat/frmChatSearch.aspx?pagesrc=frmGlobalChatSearch&source=m]
 - Referrer: [http://helpdesk.mattressshed.co.uk/Management/Root.aspx]
 - User Agent: [Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0] - IP: [81.98.206.193]
Nullable object must have a value.
System.InvalidOperationException: Nullable object must have a value.
   at System.Nullable`1.get_Value()
   at SmarterTrack.MRS.Chat.frmChatSearch.LoadPreviousSearch(ChatSearchBaseParameters search)
   at SmarterTrack.MRS.Chat.frmChatSearch.Page_Load(Object sender, EventArgs e)
   at SmarterTrack.HelperClasses.CustomPage.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)