I have created my own user control with a simple login form using asp:Login. This form is inserted into my login page in the template. In all my pages I have a little xslt macro using <xsl:when test="umbraco.library:IsLoggedOn() = true()" to check if the member is logged in or not. If not then I show a link to my login page.

When I'm clicking on the link, then my login page shows up correctly.

But if I instead is entering the login page directly as http://dynamicsexperts.net/login.aspx then I'm getting this error:

Object reference not set to an instance of an object. body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }

Server Error in '/' Application.

---

Object reference not set to an instance of an object.

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   DxLogin.LoginPageBox.Page_Load(Object sender, EventArgs e) +174
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627

Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082

I am not really sure what goes on here. Shouldn't it be the same? The only thing what I can think about is that it might be something with this code of my user control:

        public string GetURL;

        protected void Page_Load(object sender, EventArgs e)
        {

            if (Request.IsAuthenticated)
            {
                Login1.Visible = false;
                Literal1.Text = "You are already logged in!";
            }


            if (!IsPostBack)
            {
                GetURL = Request.UrlReferrer.ToString();
            }

            Login1.DestinationPageUrl = GetURL;
        }

I would be very happy if anyone can see what there is wrong, or at least help me in the right direction.