title: What do I need to do to get LiveConnect working again?
body: <p>Years ago I wrote a Java Web Start application in NetBeans that performs a simple file upload task. For years I had it as a self-signed applet but finally caved and bought a signing certificate. I've got it all signed now, but I'm running into a new problem.</p>
  
  <p>One of the main class' public methods gets called by JavaScript. However, it seems to have stopped working. When I try calling this method manually in Firebug, here's the message I get back:</p>
  
  <pre><code>Error: Liveconnect call for Applet ID 8 is not allowed in this JVM instance.
  </code></pre>
  
  <p>UPDATE: Here's the version of the error that I get when I try this in Chrome:</p>
  
  <pre><code>Error calling method on NPObject.
  </code></pre>
  
  <p>I am already using the most up-to-date version of the Java plugin (7u51), so what gives? This applet used to work, but now apparently it no longer does. Do I need to add something special to the code? Or change a setting in the way it's compiled by NetBeans?</p>