title: New custom actions not found in Install4J 5.1.9
body: <p>I am using Install4J version 5.1.9, recently upgraded from 5.0.10. I want to add a new custom action to my installation. I have an existing jar file that contains custom actions that I added using previous versions. I have created a new Action class and made sure it extends AbstractInstallAction and overrides the Install method. I have built the jar and verified that this Action class is present in the jar.</p>
  
  <p>When I run the Install4J GUI I have verified that the jar that contains the new Action class is present as an Archive in the list of Custom Code &amp; Resources. I try to add the custom action (via Search Action in Custom Code), but it is not listed (only actions I have used before are listed). </p>
  
  <p>I can modify existing actions, e.g. by adding a pop up dialog, so I know Install4J is reading the Jar file. Is there any reason why Install4J might not be finding my new custom action?</p>
  
  <p>Edit: I have tried to create a simple action so I can be sure that the error is not with the action. This my action code:</p>
  
  <pre><code>package a.b.c.install4j.installation;
  
  import com.install4j.api.actions.AbstractInstallAction;
  import com.install4j.api.context.InstallerContext;
  import com.install4j.api.context.UserCanceledException;
  
  public class TestAction extends AbstractInstallAction {
  
      @Override
      public boolean install(InstallerContext installerContext) throws UserCanceledException {
          return false;
      }
  }
  </code></pre>
  
  <p>This action is not picked up either, but is present in the jar file Install4J is checking.</p>