How to enable bunding and minification on IIS 6 web server

I have added two lines of code in global.asax file to register bundle files,but after deployment to iis 6 server it is not able to load bundled files.but there is no problem with iis 7.

ApplicationSettingsHelper appSettings = new ApplicationSettingsHelper();
appSettings.AddBundling();

Here ApplicationSettingsHelper is c# class which reads xml file to load all js/css files and registers to the bundle.

as i already said it works well with IIS 7.there are no issues running IIS 7 Version.problem comes only with IIS 6.there are no code issues.

Please look at block of code written under AddBundling method

try
{
StreamReader reader = new StreamReader(HttpContext.Current.Server.MapPath("~/Bundle/FileBundling.xml"));
XmlSerializer serializer = new XmlSerializer(typeof(Bundling));

Bundling bundlingInfo = (Bundling)serializer.Deserialize(reader);
reader.Close();
reader.Dispose();

#region Bundling of the css files.
Bundle cssBundle;

foreach (Css css in bundlingInfo.Css)
{
cssBundle = new StyleBundle(css.Name);
foreach (string cssFile in css.Path)
{
cssBundle.Include(cssFile);
}

BundleTable.Bundles.Add(cssBundle);
}

#endregion

#region Bundling of the java script files.

Bundle jsBundle;
foreach (Js js in bundlingInfo.Js)
{
bundleName = js.Name;
jsBundle = new ScriptBundle(js.Name);
foreach (string jsFile in js.Path)
{
filePath = jsFile;
jsBundle.Include(jsFile);
}

BundleTable.Bundles.Add(jsBundle);
}

#endregion
BundleTable.EnableOptimizations = true;
}

if the issue with code then it should not have worked with IIS 7 version too.

I suspect this could be problem with IIS only.

can you provide more detail on solution to this issue.