JNLPFile error in webstart

[aminur rashid]

in what case we get following error in java webstart
JNLPException[category: Security Error : Exception: null : LaunchDesc: null ]
at com.sun.javaws.LaunchDownload.checkSignedResourcesHelper(Unknown Source)
at com.sun.javaws.LaunchDownload.checkSignedResources(Unknown Source)
at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Any solution/help My JNLP file
<?xml version="1.0" encoding="windows-1252"?>
<jnlp spec="1.0" codebase="http://LocalHost:8080/Workspace1-clien1-context-root ">
<information>
<title>Bug Test</title>
<vendor>Vendor</vendor>
<description>My Project</description>
</information>
<security><all-permissions/></security>
<resources>
<j2se version="1.3"/>
<jar href="some.jar" />
<jar href="my.zip" />
<extension name="common" href= "local.jsp" />
</resources>
<application-desc main-class="mainClass"/>
</jnlp>
[ May 10, 2003: Message edited by: aminur rashid ]