Deploying an Meteor app with mup - error: no configs found for meteor

I’ve been trying to deploy a meteor app to Digital Ocean. I’ve configured mup.js like this:

module.exports = {
  servers: {
    one: {
      host: '[droplet ip address]',
      username: '[username]',
      password: '[password]'
    }
  },

  // Install MongoDB on the server. Does not destroy the local MongoDB on future setups
  "setupMongo": true,

  // WARNING: Node.js is required! Only skip if you already have Node.js installed on server.
  "setupNode": true,

  // WARNING: nodeVersion defaults to 0.10.36 if omitted. Do not use v, just the version number.
  "nodeVersion": "0.10.36",

  // Install PhantomJS on the server
  "setupPhantom": true,

  // Application name (no spaces).
  "appName": "pichaprint",

  // Location of app (local directory). This can reference '~' as the users home directory.
  // i.e., "app": "~/Meteor/my-app",
  // This is the same as the line below.
  "app": ".",

  // Configure environment
  // ROOT_URL must be set to https://YOURDOMAIN.com when using the spiderable package & force SSL
  // your NGINX proxy or Cloudflare. When using just Meteor on SSL without spiderable this is not necessary
  "env": {
    "PORT": 80,
    "ROOT_URL": "http://pichaprint.com",
  },

  "deployCheckWaitTime": 15
};

When I try to run mup setup, I get the following error: error: no configs found for meteor

I’m currently working live by using PuTTY and I’m within the meteor project folder which contains the mup.js file (that’s the reason the app property value is a period). What could I be doing wrong?

You should use an absolute path for “app” like shown in the comment.