Also, in my situation, similar post resolutions on this board, such as:
Adding :
<%@ Page language="c#" EnableEventValidation="false" AutoEventWireup="false" Inherits="CuteSoft.Chat.UI.ChatAdminPage" %>
to LiveSupport.ascx
and <pages enableEventValidation="false" /> to system.web in web.config are not viable options in my scenario as LiveSupport.ascx and DNN, respectively do not support these solutions.