When building on master I have no problem
But when my (windows) slave have completed the build an exception happens:

checkstyle:
[checkstyle] Running Checkstyle 4.4 on 384 files

BUILD SUCCESSFUL
Total time: 3 minutes 4 seconds
Recording test results
FATAL: remote file operation failed
hudson.util.IOException2: remote file operation failed
at hudson.FilePath.act(FilePath.java:631)
at
hudson.plugins.violations.ViolationsPublisher.perform(ViolationsPublisher.java:77)
at
hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:56)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:372)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:360)
at hudson.model.Build$RunnerImpl.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:345)
at hudson.model.Run.run(Run.java:947)
at hudson.model.Build.run(Build.java:112)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:119)
Caused by: java.io.IOException: Remote call failed
at hudson.remoting.Channel.call(Channel.java:518)
at hudson.FilePath.act(FilePath.java:626)
... 10 more
Caused by: java.lang.NoClassDefFoundError: hudson/maven/MavenReporterDescriptor
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:108)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at
hudson.plugins.violations.ViolationsCollector.invoke(ViolationsCollector.java:98)
at
hudson.plugins.violations.ViolationsCollector.invoke(ViolationsCollector.java:27)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:1642)
at hudson.remoting.UserRequest.perform(UserRequest.java:103)
at hudson.remoting.UserRequest.perform(UserRequest.java:47)
at hudson.remoting.Request$2.run(Request.java:236)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:54)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: hudson.maven.MavenReporterDescriptor
at
hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch(RemoteClassLoader.java:275)
at sun.reflect.GeneratedMethodAccessor666.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:264)
at hudson.remoting.Request$2.run(Request.java:236)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)

I have had the slave working weeks ago. It seem to have broken when i
updated hudson on the master