title: unity Ensure Read/Write is enabled
body: <p>I new to Unity.</p>
  
  <p>Can some one tell me what this error mean </p>
  
  <pre><code>Ensure Read/Write is enabled on the Particle System's Texture 
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/VerxV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VerxV.png" alt="enter image description here"></a></p>
  
  <p>Particle system need to play on start but sometimes work(play effect) sometimes not.
  Thanks  </p>