JNLPException during JNLP Application Lanuch

Question

I am trying to deploy an application through JavaWebStart and I am accessing 4 other JAR resources.
The JNLP file it related resources are all located in the 6.3 directory.
However, I am getting the following exception when I try to launch the JNLP:
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(Thread.java:484)
Also, here is my JNLP code:
<?xml version="1.0" encoding="utf-8"?>
<jnlp
spec="1.0+"
codebase="http://jfisher:7001/6.3/"
href="Table.jnlp">
<information>
<title>Table</title>
<vendor>Sample Company</vendor>
<homepage href="docs/help.html"/>
<description>Table</description>
<description kind="short">Table</description>
<icon href="images/swingset2.jpg"/>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.3"/>
<jar href="TableSigned.jar"/>
<jar href="xalan.jar" />
<jar href="jaxp.jar" />
<jar href="crimson.jar" />
</resources>
<application-desc main-class="com.sheet.Table"/>
</jnlp>

Answer 1

I'm new to JNLP and so this is just a suggestion based upon some tests I ran today trying to get my JNLP file to work. Your codebase="http://jfisher:7001/6.3/" has a simple server name 'jfisher' Try hard coding the IP address of the server instead (172.0.0.1, or whatever). I had a similar problem and clicking through the tabs in JNLP found that '.org' was being appended to my server name some of the time, I'm not sure why. Switching to the IP address fixed the problem. I would guess that if you had .com or .org on your server name this would not be a problem. I still have more testing to do to find out why and what is required in the server name (I would rather not hard-code it), but though I would give you this suggestion for now to see if it helps.