The Scripting.FileSystemObject is marked as not safe for scripting. If you open a HTML page that uses it in IE, you will get a security warning. Depending on your IE settings, you may be able to proceed with the object creation. In DVDProfiler's HTML windows, creation of unsafe objects is not possible.

You either have to write your own helper object that is safe for scripting, or you can use the following crude hack:

var oXml = new ActiveXObject("msxml2.DOMDocument");
oXml.validateOnParse = false;
oXml.resolveExternals = false;
oXml.async = false;
oXml.load("<filename>");

This will of course always fail, unless your file is indeed an XML file, but you will get different error codes, depending on the reason.

switch (oXml.parseError.errorCode) {
  case -2146697210:
    // File not found
    break;
  case -2147024893:
    // Path not found
    break;
  default:
    // File exists
}

Okay, thx, I'll try the DOM hack.