BundleTransformer.Core throwing implementation exception

Question

I'm trying to use BundleTransformer.Core and BundleTransformer.Less, however I've run into the following exception when trying to setup MVC4 bundles using the recommended code:

Method 'OrderFiles' in type 'BundleTransformer.Core.Orderers.NullOrderer' does not have an implementation.

That exception is thrown on registering the following:

public static void RegisterBundles(BundleCollection bundles)
{
    var cssTransformer = new CssTransformer();
    var jsTransformer = new JsTransformer();
    var nullOrderer = new NullOrderer();

    var commonStylesBundle = new Bundle("~/Bundles/CommonStyles");
    commonStylesBundle.Include("~/Styles/V3/functions.less",
                               "~/Styles/V3/helpers.less",
                               "~/Styles/V3/media-queries.less",
                               "~/Styles/V3/normalize.less",
                               "~/Styles/V3/print.less",
                               "~/Styles/V3/style.less");
    commonStylesBundle.Transforms.Add(cssTransformer);
    commonStylesBundle.Orderer = nullOrderer;

    bundles.Add(commonStylesBundle);
}

I have tried both the latest versions of BundleTransformer.Core and the immediate prior version.

Answer 1

It seems that you have installed preview version of the Microsoft ASP.NET Web Optimization Framework (1.1.0 Alpha1 or 1.1.0 Beta1). At the moment, the Bundle Transformer supports only RTM-version of the Microsoft ASP.NET Web Optimization Framework (version 1.0.0). I recommend that you roll back to RTM-version.