Hi metrosuperstar,
Your site is on localhost? That can't work. Note the paragraph at the top of the instructions for setting up Google Drive:
Note: The Google Drive authentication procedure requires that your website has a publicly reachable address (i.e. the http://etc… link can be reached from the Internet). Therefore, it does not work for websites on local development machines that are not reachable from the Internet. (Use Dropbox, Amazon S3, Rackspace Cloud Files, DreamObjects, FTP, SFTP or WebDAV instead).
David