Pas de chargement de ressources: 403 forbidden with.optimisation js

j'essaie de minifier mon .js et .les fichiers css.

j'ai installé le pack Install-Package Microsoft.AspNet.Web.Optimization

lorsque j'active l'optimisation avec BundleTable.EnableOptimizations = true;

je reçois cette erreur sur le client:

N'a pas chargé la ressource: le serveur a répondu avec un statut de 403 (Interdit) http://localhost:22773/Content/themes/elevation/v=gnDLBbf1VVRuQDXtIYn1q0P3ICZG7oiwwgxPRbaLvqI1

quelqu'un a une idée de ce que je fais mal?

---BundleConfig info-------------------------------

 public class BundleConfig
{
    public static void RegisterBundles(BundleCollection bundles)
    {
        BundleTable.EnableOptimizations = true;

        bundles.Add(new ScriptBundle("~/bundles/myJquery").Include(

           "~/Scripts/jquery-1.9.1.js",
          "~/Scripts/jquery-ui-1.10.1.custom.js",
            "~/Scripts/jquery.signalR-1.0.1.js",
            "~/Scripts/signalr-hubs.js",
            "~/Scripts/Controls/Select/Simple/jquery.ui.selectmenu.js"
        ));


        bundles.Add(new ScriptBundle("~/bundles/shared").Include(
            "~/Scripts/global/prototypes.js",
            "~/Scripts/global/mathutil.js",
            "~/Scripts/global/elevationevents.js"
            ));


        bundles.Add(new ScriptBundle("~/bundles/core").Include(
            "~/Scripts/elevation/core/sys.config.js",
            "~/Scripts/elevation/core/bays.js",
            "~/Scripts/elevation/core/door.js",
            "~/Scripts/elevation/core/horiziontal.js",
            "~/Scripts/elevation/core/vertical.js"));


        bundles.Add(new StyleBundle("~/Content/themes/elevation").Include(
            "~/Content/themes/dialogs/dialogs.css",
            "~/Content/themes/social/ac/acSocial.css",
            "~/Content/themes/elevation/elevation.css"
      ));
    }
}

-----------------------------je n'ai pas encore eu ce compris---------------------

j'utilise 2013 .net et iis8 sur un windows7 OS

voici ma dernière erreur, je ne peux pas sortir ma solution du mode de débogage, parce que si je le fais, j'obtiens cette erreur ci-dessous.

    HTTP Error 403.14 - Forbidden
The Web server is configured to not list the contents of this directory.

Most likely causes:
A default document is not configured for the requested URL, and directory browsing is not enabled on the server.

Things you can try:
If you do not want to enable directory browsing, ensure that a default document is configured and that the file exists.
Enable directory browsing.
Go to the IIS Express install directory.
Run appcmd set config /section:system.webServer/directoryBrowse /enabled:true to enable directory browsing at the server level.
Run appcmd set config ["SITE_NAME"] /section:system.webServer/directoryBrowse /enabled:true to enable directory browsing at the site level.
Verify that the configuration/system.webServer/directoryBrowse@enabled attribute is set to true in the site or application configuration file.

Detailed Error Information:
Module     DirectoryListingModule
Notification       ExecuteRequestHandler
Handler    StaticFile
Error Code     0x00000000
Requested URL      http://localhost:1499/Content/themes/elevation/?v=aukmuLTC3g_fDko3eWmzqq7A8miRqgsJKXA2GO3w-pg1
Physical Path      c:usersadministratordocumentsvisual studio 2013ProjectsAlumCloudAlumCloudContentthemeselevation
Logon Method       Anonymous
Logon User     Anonymous
Request Tracing Directory      C:UsersAdministratorDocumentsIISExpressTraceLogFilesALUMCLOUD(3)

More Information:
This error occurs when a document is not specified in the URL, no default document is specified for the Web site or application, and directory listing is not enabled for the Web site or application. This setting may be disabled on purpose to secure the contents of the server.
View more information »

---

Voici l'url qui est créé par iis8 lorsqu'il n'est pas en mode de débogage qui produit l'erreur

http://localhost:1499/Content/themes/elevation/?v=aukmuLTC3g_fDko3eWmzqq7A8miRqgsJKXA2GO3w-pg1

Voici l'url qui renvoie le réel .CSS fichier sans aucune erreur

http://localhost:1499/Content/themes/elevation/elevation.css