xession-errors: Java applet not initialized.

*** NSPlugin Viewer  *** WARNING: unhandled variable 18 (<unknown variable>) in NPN_GetValue()
*** NSPlugin Viewer  *** WARNING: unhandled variable 18 (<unknown variable>) in NPN_GetValue()
*** NSPlugin Viewer  *** WARNING: unhandled variable 18 (<unknown variable>) in NPN_GetValue()
java version "1.6.0_18"
OpenJDK Runtime Environment (IcedTea6 1.8.2) (6b18-1.8.2-4ubuntu2)
OpenJDK 64-Bit Server VM (build 16.0-b13, mixed mode)
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize applet.
	at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:604)
	at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:548)
	at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:729)
Caused by: java.util.MissingResourceException: cannot find file: filename=view/gui.properties
	at jmaster.util.property.PropertyFactory.getFileInputStream(PropertyFactory.java:117)
	at jmaster.util.property.PropertyFactory.getFileReader(PropertyFactory.java:125)
	at jmaster.util.property.PropertyFactory.getProperty(PropertyFactory.java:148)
	at jmaster.util.swing.GUIHelper.<init>(GUIHelper.java:188)
	at jmaster.util.swing.GUIHelper.getInstance(GUIHelper.java:194)
	at jmaster.jumploader.app.JumpLoaderApplet.<init>(JumpLoaderApplet.java:86)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
	at java.lang.Class.newInstance0(Class.java:372)
	at java.lang.Class.newInstance(Class.java:325)
	at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:588)
	... 2 more
Caused by: 
java.util.MissingResourceException: cannot find file: filename=view/gui.properties
	at jmaster.util.property.PropertyFactory.getFileInputStream(PropertyFactory.java:117)
	at jmaster.util.property.PropertyFactory.getFileReader(PropertyFactory.java:125)
	at jmaster.util.property.PropertyFactory.getProperty(PropertyFactory.java:148)
	at jmaster.util.swing.GUIHelper.<init>(GUIHelper.java:188)
	at jmaster.util.swing.GUIHelper.getInstance(GUIHelper.java:194)
	at jmaster.jumploader.app.JumpLoaderApplet.<init>(JumpLoaderApplet.java:86)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
	at java.lang.Class.newInstance0(Class.java:372)
	at java.lang.Class.newInstance(Class.java:325)
	at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:588)
	at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:548)
	at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:729)
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)
*** NSPlugin Viewer  *** WARNING: unhandled variable 18 (<unknown variable>) in NPN_GetValue()
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 65127954 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.