I have Hudson installed as a Windows Service. Up until now Hudson has been configured to use the 32-bit version of Java, in hudson.xml:

<executable>C:\Program Files (x86)\Java\jre6\bin\java</executable>

However I need to use the 64-bit JRE (in order to spawn 64-bit cmd.exe to run Windows Batch Command build steps). Specifying the 64-bit JRE and restarting Hudson fails, producing the following:

24-Aug-2010 19:39:52 hudson.WebAppMain$2 run
SEVERE: Failed to initialize Hudson
org.jvnet.hudson.reactor.ReactorException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'activeDirectory': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:246)
at hudson.model.Hudson.executeReactor(Hudson.java:689)
at hudson.model.Hudson.<init>(Hudson.java:606)
at hudson.model.Hudson.<init>(Hudson.java:546)
at hudson.WebAppMain$2.run(WebAppMain.java:222)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'activeDirectory': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:231)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:957)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:869)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:514)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:485)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:413)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:735)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:369)
at hudson.util.spring.DefaultRuntimeSpringConfiguration.getApplicationContext(DefaultRuntimeSpringConfiguration.java:94)
at hudson.util.spring.BeanBuilder.createApplicationContext(BeanBuilder.java:388)
at hudson.plugins.active_directory.ActiveDirectorySecurityRealm.createSecurityComponents(ActiveDirectorySecurityRealm.java:62)
at hudson.security.SecurityRealm.getSecurityComponents(SecurityRealm.java:359)
at hudson.security.HudsonFilter.reset(HudsonFilter.java:134)
at hudson.model.Hudson.setSecurityRealm(Hudson.java:1767)
at hudson.model.Hudson$13.run(Hudson.java:2165)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$3.runTask(Hudson.java:671)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$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)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:98)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:225)
... 28 more
Caused by: java.lang.NullPointerException
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.<init>(ActiveDirectoryUnixAuthenticationProvider.java:52)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:83)
... 30 more