J2SE Version (please include all output from java -version flag):

java version "1.6.0_15"
Java(TM) SE Runtime Environment (build 1.6.0_15-b03)
Java HotSpot(TM) Client VM (build 14.1-b02, mixed mode, sharing)

Does this problem occur on J2SE 1.4.x or 5.0.x ?  Yes / No (pick one)

Works fine in JDK 6.0_12 (Did not check 13 or 14)


Operating System Configuration Information (be specific):
Windows Vista Business SP1

Hardware Configuration Information (be specific):
HP Pavillion dv9000
Windows Vista Business SP2 32 bit
3 GB RAM
Intel Core 2 Duo T9300



Bug Description:
Java Web Start 1.6.0_15
Using JRE version 1.4.2_17-b06 Java HotSpot(TM) Client VM
User home directory = C:\Users\mac
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
0-5: set trace level to <n>
----------------------------------------------------
Reading certificates from 3574 http://builder.dev.donnell.com:8940/webstart/ViewerLauncher.builder.dev.donnell.com.jar | C:\Users\mac\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\27\2c9b981b-36f95399.idx
Reading certificates from 3485 http://builder.dev.donnell.com:8940/JViewer/lib/dsi/JavaViewer.jar | C:\Users\mac\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\51\2749573-72604bb3.idx
#### Java Web Start Error:

#### java.lang.NoClassDefFoundError: java/security/CodeSigner



java.lang.NoClassDefFoundError: java/security/CodeSigner
	at com.sun.javaws.security.SigningInfo.setContains(Unknown Source)
	at com.sun.javaws.security.SigningInfo.overlapChainLists(Unknown Source)
	at com.sun.javaws.LaunchDownload.checkSignedResourcesHelper(Unknown Source)
	at com.sun.javaws.LaunchDownload.checkSignedResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareLaunchFile(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.launch(Unknown Source)
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Steps to Reproduce (be specific):

An old version of our app wants to use JRE 1.4.  The JNLP file requests to
be run with a 1.4 JRE.  However, if Java 6.0_15 is installed, the 6.0_15
version of webstart downloads the application and launches the app with an
installed version of 1.4.  This is evident from:
      Java Web Start 1.6.0_15
      Using JRE version 1.4.2_17-b06 Java HotSpot(TM) Client VM

The error comes from: (which is clearly a Sun class)
	at com.sun.javaws.LaunchDownload.checkSignedResources(Unknown
Source)

Run this with using the webstart in 6.0_12 and it works perfectly.

appg that does not work has a signed version of the JNLP file (meaning
that there is a copy of the JNLP file in the main signed jar file).  If
take the JNLP file out of the jar file, it works.