title: cocos2d: Warning: File not found: particleTexture.png
body: <p>I have only a line to load particle.png, and the texture is embedded in it. <br>
  Sometimes the texture is seen and somethimes it does not appear.<br>
  I noticed I get a warning message:<br></p>
  
  <pre><code>cocos2d: Warning: File not found: particleTexture.png
  </code></pre>
  
  <p>My just code to load plist particle is this :</p>
  
  <pre><code>CCParticleSystemQuad emitter=[CCParticleSystemQuad particleWithFile:@"rain.plist"];
  </code></pre>
  
  <p>This is interesting:<br>
  Sometimes the texture is seen: sometimes it is not, and instead of the texture I see gradient balls.</p>