エラー　予期しない例外

起動ファイル
<?xml version="1.0" encoding="utf-8"?>
<jnlp
    spec="1.0+"
    codebase="http://sqs2.net/2009/12/04"
    href="SourceEditor.jnlp">
  <information>
    <title>SQS SourceEditor2.0(2009/12/04)</title>
    <vendor>Hiroya KUBO, Chiba University of Commerce</vendor>
    <homepage href="http://www.sqs2.net/">
    </homepage>
    <icon href="wizard.gif" kind="default">
    </icon>
    <icon href="wizard.gif" kind="splash">
    </icon>
    <icon href="wizard.gif" kind="shortcut">
    </icon>
      <related-content href="LICENSE.txt">
        <title>SourceEditor's License</title>
        <description>Apache License, Version 2</description>
      </related-content>

    <update check="background" policy="prompt-update"/>

    <description>Shared Questionnaire System</description>
    <description kind="one-line">0</description>
    <description kind="short">
    </description>
    <!--<association mime-type="application/x-sqs-source" extensions="sqs"/>--> 
    <offline-allowed>
    </offline-allowed>
      <shortcut online="false">
        <!--<desktop/>-->
        <menu submenu="SQS"/>
      </shortcut>
  </information>

  <security>
    <all-permissions/>
  </security>

  <resources>
    <j2se version="1.6" max-heap-size="812m" initial-heap-size="32m" />
    <!--Dawt.useSystemAAFontSettings=on-->
    
<jar href="SourceEditor-2.0-SNAPSHOT.jar" main="true"/>
<jar href="sqs-util-1.3.37.jar"/>
<jar href="commons-logging-1.1.jar"/>
<jar href="jetty-6.1.9.jar"/>
<jar href="jetty-util-6.1.9.jar"/>
<jar href="servlet-api-2.5-6.1.9.jar"/>
<jar href="xercesImpl-2.9.1.jar"/>
<jar href="xml-apis-1.3.04.jar"/>
<jar href="xalan-2.7.0.jar"/>
<jar href="serializer-2.7.1.jar"/>
<jar href="commons-io-1.4.jar"/>
<jar href="commons-lang-2.4.jar"/>
<jar href="commons-codec-1.2.jar"/>
<jar href="sqs-translator-1.0.9.jar"/>
<jar href="xmlgraphics-commons-1.3.1.jar"/>
<jar href="fop-0.95-20090301.jar"/>
<jar href="batik-all-1.7.jar"/>
<jar href="avalon-framework-api-4.2.0.jar"/>
<jar href="avalon-framework-impl-4.2.0.jar"/>
<jar href="itext-2.0.4.jar"/>
<jar href="xml-apis-ext-1.3.04.jar"/>
<jar href="ipafont-00201.jar"/>
<jar href="servlet-api-2.3.jar"/>

  </resources>
  <application-desc main-class="net.sf.sqs_xml.editor.sqs.swing.SourceEditorLauncher">
<!--    <argument>arg1</argument> -->
<!--    <argument>arg2</argument> -->
  </application-desc>
</jnlp>

例外
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sun.javaws.Launcher.executeApplication(Launcher.java:1914)
	at com.sun.javaws.Launcher.executeMainClass(Launcher.java:1847)
	at com.sun.javaws.Launcher.doLaunchApp(Launcher.java:1609)
	at com.sun.javaws.Launcher.run(Launcher.java:138)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassCircularityError: net/sqs2/net/ClassURLConnection
	at net.sqs2.net.ClassURLStreamHandlerFactory.createURLStreamHandler(ClassURLStreamHandlerFactory.java:12)
	at java.net.URL.getURLStreamHandler(URL.java:1107)
	at java.net.URL.<init>(URL.java:572)
	at java.net.URL.<init>(URL.java:464)
	at java.net.URL.<init>(URL.java:413)
	at com.sun.deploy.util.URLUtil.checkTargetURL(URLUtil.java:635)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.checkResource(DeployURLClassPath.java:832)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.getResource(DeployURLClassPath.java:952)
	at com.sun.deploy.security.DeployURLClassPath.getResource(DeployURLClassPath.java:234)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at com.sun.jnlp.JNLPClassLoader.findClass(JNLPClassLoader.java:345)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:295)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at net.sqs2.net.ClassURLStreamHandlerFactory.createURLStreamHandler(ClassURLStreamHandlerFactory.java:12)
	at java.net.URL.getURLStreamHandler(URL.java:1107)
	at java.net.URL.<init>(URL.java:572)
	at java.net.URL.<init>(URL.java:464)
	at java.net.URL.<init>(URL.java:413)
	at net.sf.sqs_xml.editor.base.swing.SourceEditorMenuBarMediator.createImageIcon(SourceEditorMenuBarMediator.java:87)
	at net.sf.sqs_xml.editor.sqs.swing.SQSSourceEditorMenuBarMediator.<clinit>(SQSSourceEditorMenuBarMediator.java:58)
	at net.sf.sqs_xml.editor.sqs.swing.SQSSourceEditorMediator.createSourceEditorMenuBarMediator(SQSSourceEditorMediator.java:92)
	at net.sf.sqs_xml.editor.base.swing.SourceEditorMediator.<init>(SourceEditorMediator.java:58)
	at net.sf.sqs_xml.editor.sqs.swing.SQSSourceEditorMediator.<init>(SQSSourceEditorMediator.java:62)
	at net.sf.sqs_xml.editor.sqs.swing.SourceEditorLauncher.main(SourceEditorLauncher.java:18)
	... 9 more