Additional information:
When checking the downloaded zip file, I get the following information:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 500 Request failed.</title>
</head>
<body><h2>HTTP ERROR 500 Request failed.</h2>
<table>
<tr><th>URI:</th><td>/api/gen/download/0e5ae523-1c68-4f27-b8ed-0e945e227734</td></tr>
<tr><th>STATUS:</th><td>500</td></tr>
<tr><th>MESSAGE:</th><td>Request failed.</td></tr>
<tr><th>SERVLET:</th><td>jersey</td></tr>
</table>
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</body>
</html>
Thanks
Gideon