I am getting very similar error when I tried running any website containing/requiring JAVA using firefox or seamonkey browser on Ubuntu 10.04 32 bit OS.
It says this: java version "1.6.0_18" OpenJDK Runtime Environment (IcedTea6 1.8.1) (6b18-1.8.1-0ubuntu1) OpenJDK Client VM (build 16.0-b13, mixed mode, sharing) File cannot be launched because offline-allowed tag not specified and system currently offline. java.lang.NullPointerException at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:99) at sun.applet.AppletPanel.run(AppletPanel.java:380) at java.lang.Thread.run(Thread.java:636) java.lang.NullPointerException at sun.applet.AppletPanel.run(AppletPanel.java:430) at java.lang.Thread.run(Thread.java:636) java.lang.Exception: Applet initialization timeout at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:637) at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270) at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82) java.lang.RuntimeException: Failed to handle message: handle 8394350 for instance 1 at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:660) at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270) at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82) Caused by: java.lang.Exception: Applet initialization timeout at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:637) ... 2 more Error: Unable to fetch applet instance id from Java side. I removed Java, downloaded jre again and then reinstalled it. But error is still there.kindly let me know possible solutions. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/440841 Title: IcedTea Plugin Dont work APPLET -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs