Ember-cli: Live reload not working - ember.js

Question

I started my first project with ember cli and I noticed that the live reload isn't working. When I start the development server, I get multiple error messages (see below). Changes to the code base are only available after a restart of the server.
$ ember server
version: 0.1.2
Livereload server on port 35729
Serving on http://0.0.0.0:4200/
2014-12-03 17:51 ember[16491] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-21)
2014-12-03 17:51 ember[16491] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-21)
...
2014-12-03 17:51 ember[16491] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-21)
2014-12-03 17:51 ember[16491] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-21)
Build successful - 1180ms.
Slowest Trees | Total
-------------------------------+----------------
Concat | 368ms
ES6Concatenator | 150ms
ES3SafeFilter | 149ms
JSHint - App | 104ms
JSHint - Tests | 80ms
At this stage I have the following packages/addons installed:
DEBUG: -------------------------------
DEBUG: Ember : 1.7.0
DEBUG: Ember Data : 1.0.0-beta.10
DEBUG: EmberFire : 1.3.1
DEBUG: Handlebars : 1.3.0
DEBUG: jQuery : 1.11.1
DEBUG: -------------------------------
Any idea what could cause this issue? It is quite annoying to restart the server for every change.
Thank you for your suggestions.

Answer 1

The error is essentially caused by FSEvents watching too many files. If you're using Sublime Text, try excluding node_modules/, tmp/, and dist/ from your project (add them to the folder_exclude_patterns array in your Sublime user preferences).
If you're not using Sublime, or if doing so doesn't fix the issue, try upgrading your version of Node and version of ember-cli to the latest versions, as well as installing watchman using brew install watchman if you have Homebrew installed/are on OS X (as the latest versions of ember-cli no longer rely on FSEvents.
Source: https://github.com/ember-cli/ember-cli/issues/1260#issuecomment-67549158

Answer 2

Add this parameters(liveReload and Watcher) to the file /.ember-cli and this will end with something like this:
{
/**
Ember CLI sends analytics information by default. The data is ...
*/
"disableAnalytics": false,
"liveReload": true,
"watcher": "polling"
}
/* Pooling, this is where the magic come, allow to edit file in the host and outside(EX: Virtual machines and servers relate) */