Hi Carl

Thanks for your help  - unfortunately no success so far

Let's try two things:

*First*, let's clear the browser cache to rule out that annoyance:

This didn't change anything. I have also tried different computers and different browsers

*Second*, let's see what the server ends up sending the client for
visualizations:

it just looks like this:

    "visible": true,
    "visualizations": [
        {
            "embeddable": false,
            "href": "/visualization/trackster?dataset_id=b1c72d84f3501797&dbkey=%3F&hda_ldda=hda",

            "html": "Trackster",
            "target": "_top"
        }
    ]
}

Hans-Rudolf