I try to upgrade jenkins from 1.415 to 1.427 and get following error message:

[Winstone 2011/08/24 09:55:47] - Beginning extraction from war file
Jenkins home directory: /home/hudson/.hudson found at: $user.home/.hudson
[Winstone 2011/08/24 09:55:56] - HTTP Listener started: port=8080
[Winstone 2011/08/24 09:55:56] - AJP13 Listener started: port=8009
Using one-time self-signed certificate
[Winstone 2011/08/24 09:55:56] - Winstone shutdown successfully
[Winstone 2011/08/24 09:55:56] - Container startup failed
java.io.IOException: Failed to start a listener: winstone.ssl.HttpsListener
at winstone.Launcher.spawnListener(Launcher.java:250)
at winstone.Launcher.<init>(Launcher.java:206)
at winstone.Launcher.main(Launcher.java:398)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at Main._main(Main.java:268)
at Main.main(Main.java:96)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:67)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:522)
at winstone.Launcher.spawnListener(Launcher.java:238)
... 8 more
Caused by: java.lang.NoClassDefFoundError: sun.security.x509.CertAndKeyGen
at winstone.ssl.HttpsListener.<init>(HttpsListener.java:111)
... 13 more
Caused by: java.lang.ClassNotFoundException: sun.security.x509.CertAndKeyGen
at java.net.URLClassLoader.findClass(URLClassLoader.java:496)
at java.lang.ClassLoader.loadClass(ClassLoader.java:631)
at java.lang.ClassLoader.loadClass(ClassLoader.java:597)
... 14 more

Aug 24, 2011 9:55:56 AM hudson.WebAppMain$2 run
SEVERE: Failed to initialize Jenkins
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:199)
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:244)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:813)
at jenkins.model.Jenkins.<init>(Jenkins.java:727)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.model.Hudson.<init>(Hudson.java:77)
at hudson.WebAppMain$2.run(WebAppMain.java:217)
Exception in thread "pool-2-thread-1" java.lang.NullPointerException
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:191)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:810)

java version "1.6.0"
Java(TM) SE Runtime Environment (build pap6460sr5-20090529_04(SR5))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 AIX ppc64-64 jvmap6460sr5-20090519_35743 (JIT enabled, AOT enabled)
J9VM - 20090519_035743_BHdSMr
JIT - r9_20090518_2017
GC - 20090417_AA)
JCL - 20090529_01