title: Dart pub is not downloading dependencies
body: <p>I had moved my Dart Project to another folder, with the same folder structure, however, now, I'm receiving the following message:</p>
  
  <pre><code>Running pub install ...
  Pub install failed, [1] Resolving dependencies...
  Could not find package "dartflash 0.6.3" at http://pub.dartlang.org.
  </code></pre>
  
  <p>Here is my pubspec.yaml:</p>
  
  <pre><code>name:  Chronium
  description:  A framework for doing Chrono like games.
  
  dependencies:
    dartflash: 0.6.3
  </code></pre>
  
  <p>And pubspec.lock:</p>
  
  <pre><code>{"packages":{"dartflash":{"version":"0.6.3","source":"hosted","description":"dartflash"}}}
  </code></pre>
  
  <p>And the file structure:</p>
  
  <p><img src="https://i.stack.imgur.com/AbCvQ.png" alt="file structure"></p>
  
  <p>The website (<a href="http://pub.dartlang.org/" rel="nofollow noreferrer">http://pub.dartlang.org/</a>) is accessible from the browser.
  I'm on dart (Dart Editor version 0.2.9_r16323). Do someone knows what is happening?</p>