weird exception

JNLPException[category: Security Error : Exception: null : LaunchDesc:
<jnlp codebase="http://plymouth.seatribe.se/java/jogl/" href="jogl.jnlp">
  <information>
    <title>Java Binding to the OpenGL API</title>
    <vendor>Sun Microsystems, Inc.</vendor>
    <homepage href="http://jogl.dev.java.net/"/>
    <description>Java Binding to the OpenGL API - JSR-231 Current Build</description>
    <description kind="short">Java programming language binding to the OpenGL 3D graphics API. (Current build of JSR-231 APIs)</description>
    <offline-allowed/>
  </information>
  <security>
    <all-permissions/>
  </security>
  <resources>
    <jar href="jogl.jar"/>
    <extension name="gluegen-rt" href="http://plymouth.seatribe.se/java/jogl/gluegen-rt.jnlp"/>
  </resources>
  <resources os="Windows" arch="x86">
    <nativelib href="jogl-natives-windows-i586.jar"/>
  </resources>
  <resources os="Windows" arch="amd64">
    <nativelib href="jogl-natives-windows-amd64.jar"/>
  </resources>
  <resources os="Windows" arch="x86_64">
    <nativelib href="jogl-natives-windows-amd64.jar"/>
  </resources>
  <resources os="SunOS" arch="sparc">
    <nativelib href="jogl-natives-solaris-sparc.jar"/>
  </resources>
  <resources os="SunOS" arch="sparcv9">
    <nativelib href="jogl-natives-solaris-sparcv9.jar"/>
  </resources>
  <resources os="SunOS" arch="x86">
    <nativelib href="jogl-natives-solaris-i586.jar"/>
  </resources>
  <resources os="SunOS" arch="amd64">
    <nativelib href="jogl-natives-solaris-amd64.jar"/>
  </resources>
  <resources os="SunOS" arch="x86_64">
    <nativelib href="jogl-natives-solaris-amd64.jar"/>
  </resources>
  <resources os="Linux" arch="i386">
    <nativelib href="jogl-natives-linux-i586.jar"/>
  </resources>
  <resources os="Linux" arch="x86">
    <nativelib href="jogl-natives-linux-i586.jar"/>
  </resources>
  <resources os="Linux" arch="amd64">
    <nativelib href="jogl-natives-linux-amd64.jar"/>
  </resources>
  <resources os="Linux" arch="x86_64">
    <nativelib href="jogl-natives-linux-amd64.jar"/>
  </resources>
  <resources os="Mac OS X" arch="ppc">
    <nativelib href="jogl-natives-macosx-ppc.jar"/>
  </resources>
  <resources os="Mac OS X" arch="i386">
    <nativelib href="jogl-natives-macosx-universal.jar"/>
  </resources>
  <resources os="Mac OS X" arch="x86_64">
    <nativelib href="jogl-natives-macosx-universal.jar"/>
  </resources>
  <component-desc/>
</jnlp> ]
	at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)
	at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.launch(Unknown Source)
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)