Change folder name

Question

I'm try to change folder name, but I get the next error:

{ [Error: EPERM, rename 'c:\nodejs\files\fm\File Manager\files\temp']
   errno: -4048,
   code: 'EPERM',
   path: 'c:\\nodejs\\files\\fm\\File Manager\\files\\temp' }

My code is:

fs.rename(path + GET["fname"], path + GET['newname'], function (err) {
            if (err) console.log(err);
        });

Its works great with files, but with folders its throw an error

I think that this function (rename) dosent work on foldes, any ideas?