Issue with Assetic Twig function "javascripts"

[spicyroland]

I'm using bolt.cm based on Silex.
Added this..

"symfony/assetic-bundle": "~2.6",

..to my composer.json.
I have this inside my index.twig:

{% block additionalscripts %}
    {% javascripts 'ckeditor.js' output = '/files/js/ckeditor.js' %}
        <script src="{{ asset_url }}"></script>
    {% endjavascripts %}
{% endblock %}

Inside Bolt\Application.php I pass a new Instance of AsseticExtension to Twig using this:

// Add the Bolt Twig Extension.
  $this['twig'] = $this->share(
            $this->extend(
                'twig',
                function (\Twig_Environment $twig, $app) {
                    $twig->addExtension(new TwigExtension($app));
                    $themebase = $app['resources']->getPath('theme');

                    $am = new AssetManager();
                    $fm = new FilterManager();
                    $appbase = $app['resources']->getPath('app');
                    $am->set('ckeditor', new FileAsset($appbase.'/view/lib/ckeditor/ckeditor.js'));
                    $factory = new AssetFactory($themebase);
                    $factory->setAssetManager($am);
                    $factory->setFilterManager($fm);
                    $factory->setDebug(true);
                    $twig->addExtension(new AsseticExtension($factory));
                    return $twig;
                }
            )
        );

And when I run it i get this weird file inside my head-tag:

<script src="**/files/js/ckeditor_ckeditor_1.js**"></script>

File doesn't exist nor does it get created!!
What I'm I doing wrong or is it some kind of an issue?

[spicyroland]

..sorry - weird file got cut off.
<script src="**/files/js/ckeditor_ckeditor_1.js**"></script>

[stof]

This is exactly the same than https://github.com/symfony/AsseticBundle/issues/352, right ?

[stof]

Closing as there was no feedback (neither here or in AsseticBundle)