SVN UpdateEventHandler throws NPE

In case svnkit sends an SKIP file event UpdateEventHandler treats this as an ERROR - but it is only an action event.
Extracting the error message leads to null.
The skip event is not necessarily an error (I guess) - UEH should check for the existence of the error message in the event.
Stack trace:
com.atlassian.bamboo.repository.RepositoryException: Unable to retrieve source code to '75994' for 'LVI-ADMIN'
at com.atlassian.bamboo.repository.svn.SvnRepository.retrieveSourceCode(SvnRepository.java:372)
at com.atlassian.bamboo.v2.build.task.CheckoutUpdateForBuild.call(CheckoutUpdateForBuild.java:94)
at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.build(DefaultBuildAgent.java:192)
at com.atlassian.bamboo.v2.build.agent.BuildAgentControllerImpl.waitAndPerformBuild(BuildAgentControllerImpl.java:89)
at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent$1.run(DefaultBuildAgent.java:105)
at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$1.run(NamedThreadFactory.java:32)
at edu.emory.mathcs.backport.java.util.concurrent.helpers.ThreadHelpers$1.run(ThreadHelpers.java:34)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.tmatesoft.svn.core.SVNException: svn: Error while dispatching event: null
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:64)
at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:51)
at org.tmatesoft.svn.core.internal.io.svn.SVNEditModeReader.driveEditor(SVNEditModeReader.java:231)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.update(SVNRepositoryImpl.java:1481)
at org.tmatesoft.svn.core.wc.SVNUpdateClient.doUpdate(SVNUpdateClient.java:446)
at com.atlassian.bamboo.repository.svn.SvnRepository.update(SvnRepository.java:814)
at com.atlassian.bamboo.repository.svn.SvnRepository.retreiveSourceCodeWithException(SvnRepository.java:412)
at com.atlassian.bamboo.repository.svn.SvnRepository.retrieveSourceCode(SvnRepository.java:333)
... 7 more
Caused by: java.lang.NullPointerException
at com.atlassian.bamboo.repository.svn.UpdateEventHandler.handleEvent(UpdateEventHandler.java:149)
at org.tmatesoft.svn.core.wc.SVNBasicClient.dispatchEvent(SVNBasicClient.java:365)
at org.tmatesoft.svn.core.wc.SVNBasicClient.handleEvent(SVNBasicClient.java:428)
at org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.handleEvent(SVNWCAccess.java:94)
at org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.handleEvent(SVNWCAccess.java:78)
at org.tmatesoft.svn.core.internal.wc.SVNUpdateEditor.openFile(SVNUpdateEditor.java:984)
at org.tmatesoft.svn.core.internal.wc.SVNUpdateEditor.openFile(SVNUpdateEditor.java:542)
at org.tmatesoft.svn.core.internal.wc.SVNCancellableEditor.openFile(SVNCancellableEditor.java:113)
at org.tmatesoft.svn.core.internal.io.svn.SVNEditModeReader.processCommand(SVNEditModeReader.java:149)
at org.tmatesoft.svn.core.internal.io.svn.SVNEditModeReader.driveEditor(SVNEditModeReader.java:214)
... 12 more