Applet abre legal no appletviewer, mas não abre no explorer

Estou tendo um problema pra ver o applet no explorer. No appletviewer abre normal.

Tem isso no stacktrace:

java.lang.reflect.InvocationTargetException
at java.awt.EventQueue.invokeAndWait(Unknown Source)
at javaapplication1.Interface_de_algoritmo.init(Interface_de_algoritmo.java:29)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied (java.awt.AWTPermission setAppletStub)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.applet.Applet.setStub(Unknown Source)
at javaapplication1.Interface_de_algoritmo.initComponents(Interface_de_algoritmo.java:245)
at javaapplication1.Interface_de_algoritmo.access$000(Interface_de_algoritmo.java:24)
at javaapplication1.Interface_de_algoritmo$1.run(Interface_de_algoritmo.java:31)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

O Stub está como not set no netbeans, e não há código sobre stub.

Alguma sugestão ?

Obrigado,

Rafael