[kiwidude]

That location is correct, it will never be under Program Files. It is part of quite a number of data files that live in that folder you found that are untouched when you upgrade Calibre versions (unlike the files that are in Program Files).

As for why you do not have a file there already - it depends on whether you had after installing the Goodreads plugin gone into the configuration options for that plugin. It will only create the file when it is needed.

If you want to go back to the original settings, just delete or rename dwanthny's file, then restart Calibre and go to the configuration screen for that Goodreads plugin. As soon as you click ok you should see a file appear which is the "default" settings.