title: Android Cocos2d-x Marker Felt.ttf is not a valid font file
body: <p>I've recently started learning cocos2d-x for android. When I was building a new project for android, the build stops because of error</p>
  
  <pre><code>Unable to add 'D:\cocos2d-x-2.1.5\cocos2d-x-2.1.5\projects\Clicktchen\proj.android\assets\fonts\Marker Felt.ttf': Zip add failed
  </code></pre>
  
  <p>When I opened the font file, it says</p>
  
  <p><img src="https://i.stack.imgur.com/L6uLJ.png" alt="enter image description here"></p>
  
  <p>if I copy it outside the project folder, it can be opened.</p>
  
  <p>I've unchecked the 'readonly' permission and downloaded a new font, but it still the same
  any help is appreciated.. THX</p>