jnlp file error

[kkshukla kumar]

our jnlp file occours error when launching the jnlp file through java web start.the error is "JAR resources in JNLP file are not signed by same certificate".
our jnlp file is given below:
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<?xml version="1.0" encoding="utf-8"?>
<!-- JNLP File for SwingSet2 Demo Application -->
<jnlp
codebase="file:///home/guest/scormplayer/editor"
href = "EditorFrame.jnlp" >
<!--jnlp
codebase = "http://172.28.44.20:8080/EditorFrame" href = "EditorFrame.jnlp" -->
<information>
<title>ReloadEditor</title>
<vendor>ReloadTools</vendor>
<homepage href="http://www.google.com" />
<description>ReloadEditor</description>
<description kind="short">A demo of the capabilities
of the ReloadEditor Graphical User Interface.</description>
<icon href="file:///home/guest/scormplayer/editor/reload-editor.gif"/>
<offline-allowed/>
<security>
<all-permissions/>
</security>

</information>
<resources>
<j2se version="1.4+"/>

<jar href="file:///home/guest/scormplayer/editor/reload-editor.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/castor-0.9.5.3-xml.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/jdom.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/reload-diva.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/reload-dweezil.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/reload-jdom.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/reload-moonunit.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/reload-support.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/xercesImpl.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/xml-apis.jar" />
<jar href="file:///home/guest/scormplayer/editor/lib/AppleJavaExtensions.jar"/>
</resources>
<application-desc main-class="uk.ac.reload.editor.EditorFrame"/>
</jnlp>
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plz give reply.
thanks...