Upgraded from 1.424 to 1.434 caused Jenkins to stop working. Trying to start the Windows service fails.

Event viewer has the following events:
Child process [4944 - C:\Program Files (x86)\Jenkins\jre\bin\java -Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "C:\Program Files (x86)\Jenkins\jenkins.war" --httpPort=8080] terminated with 0

Running "java -Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "C:\Program Files (x86)\Jenkins\jenkins.war" --httpPort=8080" from the cli gives the following errors:
c:\Program Files (x86)\Jenkins\jre\bin>java -Xrs -Xmx256m -Dhudson.lifecycle=hud
son.lifecycle.WindowsServiceLifecycle -jar "C:\Program Files (x86)\Jenkins\jenki
ns.war" --httpPort=8080
Running from: C:\Program Files (x86)\Jenkins\jenkins.war
webroot: $user.home/.jenkins
[Winstone 2011/11/08 15:09:41] - Beginning extraction from war file
Jenkins home directory: C:\Users\Administrator\.jenkins found at: $user.home/.je
nkins
[Winstone 2011/11/08 15:09:42] - Winstone shutdown successfully
[Winstone 2011/11/08 15:09:42] - Container startup failed
java.io.IOException: Failed to start a listener: winstone.HttpListener
at winstone.Launcher.spawnListener(Launcher.java:250)
at winstone.Launcher.<init>(Launcher.java:202)
at winstone.Launcher.main(Launcher.java:398)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at Main._main(Main.java:268)
at Main.main(Main.java:96)
Caused by: java.io.IOException: Failed to listen on port 8080
at winstone.HttpListener.getServerSocket(HttpListener.java:117)
at winstone.HttpListener.start(HttpListener.java:70)
at winstone.Launcher.spawnListener(Launcher.java:241)
... 8 more
Caused by: java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(Unknown Source)
at java.net.ServerSocket.bind(Unknown Source)
at java.net.ServerSocket.<init>(Unknown Source)
at java.net.ServerSocket.<init>(Unknown Source)
at winstone.HttpListener.getServerSocket(HttpListener.java:112)
... 10 more

Exception in thread "pool-2-thread-2" java.lang.NullPointerException
at org.jvnet.hudson.reactor.Reactor$1.run(Reactor.java:153)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
08-Nov-2011 15:09:42 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:485)
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:244)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:816)
at jenkins.model.Jenkins.<init>(Jenkins.java:730)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.model.Hudson.<init>(Hudson.java:77)
at hudson.WebAppMain$2.run(WebAppMain.java:217)

c:\Program Files (x86)\Jenkins\jre\bin>