When the message dialog is shown an you hit any of the buttons you get the
following exception:

Exception in thread "Thread-3" java.lang.IncompatibleClassChangeException awt.MessageDialog: dynamic method cancelCallback(Lawt/MessageDialog;)V not found
        at awt.MessageDialog.show(MessageDialog.java:107)
        at webrunner.WRAccessHandler.readException(webrunner.java:288)
        at net.www.html.WWWClassLoader.localPackage(WWWClassLoader.java:76)
        at net.www.html.WWWClassLoader.loadClass(WWWClassLoader.java:106)
        at Cheat.start(Cheat.java:5)
        at webrunner.AppletDisplayItem.start(AppletDisplayItem.java:210)
        at webrunner.Document.startApplets(Document.java:281)
        at webrunner.WRWindow.startApplets(WRWindow.java:212)
        at webrunner.WRWindow.setDocument(WRWindow.java:308)
        at webrunner.DocumentSwitcher.run(WRWindow.java:552)