Hello,

after updating Jenkins from 1.599 to 1.600 i see blue balls instead of green.

I saw that stacktrace in the jenkins log:

{code] [#|2015-03-02T08:14:27.354+0100|SEVERE|glassfish3.0.1|jenkins.InitReactorRunner|_ThreadID=71;_ThreadName=Thread-1;|Failed Loading plugin greenballs java.io.IOException: Failed to initialize at hudson.ClassicPluginStrategy.load(ClassicPluginStrategy.java:439) at hudson.PluginManager$2$1$1.run(PluginManager.java:370) at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$7.runTask(Jenkins.java:903) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException at hudson.util.PluginServletFilter.addFilter(PluginServletFilter.java:99) at hudson.plugins.greenballs.PluginImpl.start(PluginImpl.java:40) at hudson.ClassicPluginStrategy.startPlugin(ClassicPluginStrategy.java:447) at hudson.ClassicPluginStrategy.load(ClassicPluginStrategy.java:436) ... 9 more |#] {code}