file.write(string) won't work in After Effects CC?

Hi!

This script working perfectly in AE CS6:

var newContent = '<Project author="Donald">';
newContent += '\n<Start>' + "starttime" + '</Start>';
newContent += '\n</Project>';
try { 
     var data = new XML ( newContent );
     var string = data.toXMLString();
     filePath = "E:/test.xml";
     var file = new File (filePath);
     file.open("w");
     file.write(string);
     file.close();
     alert("DONE for " + String (file));
     }
catch (error) { alert("Error!"); }

But stop working in After Effects CC on step:  file.write(string);

Can you show me the way how to make it work please?

Thank you in advance!