categories.list returns 404

[devinparker]

Using the categories method listed here, I'm getting a 404 response.
I'm able to pull user lists and other things so i'm assuming there is an issue with categories. please help!

here is the code:

client.categories.list(function (err, req, result) {
    if (err) {
      console.log(err);
      return;
    }
    console.log(JSON.stringify(result[0], null, 2, true));//gets the first page
  } )