Error Rendering Problems Android Studio 2.0 Beta 6
<p>I installed Android Studio and I have the following error when opening </p>

<p><strong>Rendering Problems</strong>
The following classes could not be instantiated
<code>android.support.design.widget.FloatingActionButton (...)</code></p>

<p>I have read several forums and tried with different versions , but the problem persists.</p>

<p><code>Android Studio version: 2.0 beta 6</code>
<code>SDK: Android 6.0 API 23 revision 2</code></p>

<p>I would be grateful if you can help me</p>