In BP range Configuration after click on edit here it display Error Message.
Message is like


Line 1:  <%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="~/Pages/Common/MasterPages/DialogMasterPage_new.master" CodeFile="PopUps.aspx.cs"
Line 2:      Inherits="Pages_BaseFramework_Configuration_PopUps" meta:resourcekey="PageResource1" UICulture="auto" %>
Line 3:  