title: Solution for Javascript error '_events' is null or not an object
body: <p>Is any one has solution for JavaScript error <code>'_events' is null or not an object</code>?</p>
  
  <p>Code is about 3000 line that's way I haven't put code here.Please Give me some hint so that I can put required code. I have searched on google and found two suggestion from google but not able to find solution.</p>
  
  <p>I have tried latest version of AJAXControlToolkit.but not succeed.</p>
  
  <p>I have trid <code>&lt;compilation debug="true/false"&gt;</code>. but not succeed.</p>
  
  <p>I am getting error on only one page.This page has Modelpopupextender and Radwindow and updatepanel.and error is in  <code>MicrosoftAjax.js</code> <img src="https://i.stack.imgur.com/vANYR.jpg" alt="enter image description here"></p>
  
  <pre><code>This error comes when 
  
  Step1: Post back page.
  
  Step2: redirect to other page or refresh same page. and error comes.
  </code></pre>
  
  <p>Any help would be appreciated.</p>