New Extension Installer test case failed.

http://comanche.eng.sun.com/jawstest/extensionInstaller/IM_ExtInstall.jnlp

To Reproduce:
 - Make sure JavaWS has jre 1.3.0 installed. This test case require the
   installed jre to be:
    jreLocation = "http://jsp.java.sun.com/servlet/javawsExtensionServer"
    jreVersion = "1.3.0"

 - Clear cache / extesion cache. Make sure you have write permission to
   jre directory, lib/ext directory. (Better run this test case on Windows).

 Launch the above test case. The second process to run installer will be
 finished successfully but the first test case will not be able to continue.

The following is the log:

Java Web Start Console, v1.0-rc started Tue Oct 24 16:11:20 PDT 2000
Logging to file: C:\Javaws_98.txt
Java Web Start Console, v1.0-rc started Tue Oct 24 16:11:23 PDT 2000
Logging to file: C:\Javaws_98.txt
Installing ...
bin path is C:\Program Files\Java Web Start\1.3.0\bin
lib path is C:\Program Files\Java Web Start\1.3.0\lib\ext
ExtensionFile to be installed is CityIM.jar
ExtensionURL is http://comanche.eng.sun.com/jawstest/extensionInstaller/CityIM.jar
New extFile is C:\Program Files\Java Web Start\1.3.0\lib\ext\CityIM.jar
End of Extension Installation.
Java Web Start Console, v1.0-rc started Tue Oct 24 16:11:35 PDT 2000
Logging to file: C:\Javaws_98.txt
java.lang.NullPointerException
        at com.sun.javaws.LaunchDownload.addExtensions(LaunchDownload.java:736)
        at com.sun.javaws.LaunchDownload.access$1(LaunchDownload.java:734)
        at com.sun.javaws.LaunchDownload$3.visitExtensionDesc(LaunchDownload.java:744)
        at com.sun.javaws.jnl.ExtensionDesc.visit(ExtensionDesc.java:86)
        at com.sun.javaws.jnl.ResourcesDesc.visit(ResourcesDesc.java:414)
        at com.sun.javaws.LaunchDownload.addExtensions(LaunchDownload.java:738)
        at com.sun.javaws.LaunchDownload.checkSignedLaunchDesc(LaunchDownload.java:726)
        at com.sun.javaws.Launcher.continueLaunch(Launcher.java:441)
        at com.sun.javaws.Launcher.handleApplicationDesc(Launcher.java:334)
        at com.sun.javaws.Launcher.handleLaunchFile(Launcher.java:151)
        at com.sun.javaws.Launcher.<init>(Launcher.java:113)
        at com.sun.javaws.Main.main(Main.java:153)


yu.wang@eng 2000-10-24