updating of pages

[Daimon]

Tell please why after updating of pages (in the browser), management elements vanish?
Doing debugging, a part because of what bugs,
Business in Global.asax in a method protected void Application_AuthorizeRequest (Object sender, EventArgs e),
Prompt what not so

        protected void Application_AuthorizeRequest(Object sender, EventArgs e)
        {
            if (Request.IsAuthenticated) //проверяем пользователь выполнил утентификацию
            {

                //если запрашиваеться эти страницы то не проверять роли
                string pageName = Request.FilePath.Remove(0, 1);
                if ((pageName == "Login.aspx") || (pageName == "AccessDenied.aspx"))
                    return;



                System.Data.DataView pages = (System.Data.DataView)Context.Cache["CachePages"];

                if ((pages == null) || (pages.Count == 0))
                {
                    classLogic._pages page = new classLogic._pages();
                    pages = page.List();
                    Context.Cache.Insert("CachePages", pages, null, DateTime.Now.AddHours(1), TimeSpan.Zero);
                }

                pages.RowFilter = "PagesName = '" + pageName + "'";
                if (pages.Count > 0)
                {
                    foreach (string role in pages[0]["PagesGroupList"].ToString().Split(new char[] { ',' }))
                    {
                        if (Context.User.IsInRole(role))
                        {
                            return;
                        }
                    }

                }
                Context.RewritePath("AccessDenied.aspx");
            }
        }