title: Error: Could not find or load main class com.install4j.runtime.launcher.Launcher
body: <p>I am trying to install spark client IM in Ubuntu 14.04 64 bit, but it throws error     </p>
  
  <pre><code>Could not find or load main class com.install4j.runtime.launcher.Launcher
  </code></pre>
  
  <p>I performed step 1 from this link <a href="https://www.thefanclub.co.za/how-to/how-setup-im-voip-server-using-openfire-ubuntu-1404" rel="nofollow">https://www.thefanclub.co.za/how-to/how-setup-im-voip-server-using-openfire-ubuntu-1404</a> but it still shows same error.</p>
  
  <p>Any Help will be appreciated.</p>