rem: obj.data = XPCU.createInstance("@mozilla.org/supports-wstring;1", "nsISupportsWString"); 
add: obj.data = XPCU.createInstance("@mozilla.org/supports-string;1", "nsISupportsString"); 
context:   createTransferableData: function(aValue)  {    var obj = {};    if (typeof(aValue) == "string") {      obj.data = XPCU.createInstance("@mozilla.org/supports-wstring;1", "nsISupportsWString");      obj.data.data = aValue;      obj.size = aValue.length*2;    } else if (false) {      // TODO: create data for other primitive types    }        return obj;  },
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/f7ad4265ef6a40ea01c54009718ef28974e67fe9/DNDUtils.js/buggy/extensions/inspector/resources/content/jsutil/xul/DNDUtils.js