applet works with appletviewer but not IE
I've been working on an applet that takes a flat file XML database, searches it using parameters specified by the user, and creates a new html page that contains the results. This program works perfectly in appletviewer, but every time i try to run it with IE, it refuses to do anything. I press the submit button, and it does nothing at all. It does display it fine, so I'm pretty sure it isn't a security issue. I have a good signed cab file. Does anyone know what might cause this?
[502 byte] By [
ConlonP] at [2007-9-26 5:01:23]

> Anything showing up in the Java console?
Exception occurred during event dispatching:
java.lang.ExceptionInInitializerError: com/ms/security/SecurityExceptionEx
at javax/xml/parsers/SAXParserFactory.newInstance
at dbConnectApplet.actionPerformed
at javax/swing/AbstractButton.fireActionPerformed
at javax/swing/AbstractButton$ForwardActionEvents.actionPerformed
at javax/swing/DefaultButtonModel.fireActionPerformed
at javax/swing/DefaultButtonModel.setPressed
at javax/swing/plaf/basic/BasicButtonListener.mouseReleased
at java/awt/Component.processMouseEvent
at java/awt/Component.processEvent
at java/awt/Container.processEvent
at java/awt/Component.dispatchEventImpl
at java/awt/Container.dispatchEventImpl
at java/awt/Component.dispatchEvent
at java/awt/LightweightDispatcher.retargetMouseEvent
at java/awt/LightweightDispatcher.processMouseEvent
at java/awt/LightweightDispatcher.dispatchEvent
at java/awt/Container.dispatchEventImpl
at java/awt/Component.dispatchEvent
at java/awt/EventDispatchThread.run
Exception occurred during event dispatching:
java.lang.ExceptionInInitializerError: com/ms/security/SecurityExceptionEx
at javax/xml/parsers/SAXParserFactory.newInstance
at dbConnectApplet.actionPerformed
at javax/swing/AbstractButton.fireActionPerformed
at javax/swing/AbstractButton$ForwardActionEvents.actionPerformed
at javax/swing/DefaultButtonModel.fireActionPerformed
at javax/swing/DefaultButtonModel.setPressed
at javax/swing/plaf/basic/BasicButtonListener.mouseReleased
at java/awt/Component.processMouseEvent
at java/awt/Component.processEvent
at java/awt/Container.processEvent
at java/awt/Component.dispatchEventImpl
at java/awt/Container.dispatchEventImpl
at java/awt/Component.dispatchEvent
at java/awt/LightweightDispatcher.retargetMouseEvent
at java/awt/LightweightDispatcher.processMouseEvent
at java/awt/LightweightDispatcher.dispatchEvent
at java/awt/Container.dispatchEventImpl
at java/awt/Component.dispatchEvent
at java/awt/EventDispatchThread.run