NOW the installer should work.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>blank_page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript">
var tinyMCE = parent.tinyMCE, css = tinyMCE.getParam("content_css").split(','), i, u;
// Load content CSS files
for (i=0; i<css.length; i++) {
u = css[i];
// Fix relative
if (u.charAt(0) != '/' && u.indexOf('://') == -1)
u = tinyMCE.documentBasePath + "/" + u;
document.write('<link href="' + u + '" rel="stylesheet" type="text/css" />');
}
</script>
</head>
<body id="mceTemplatePreview">
</body>
</html>