Upgraded from Hudson 1.86 to 1.110. My svn repository that requires a username/password (svn+ssh)
doesn't work anymore and I see this NullPointerException in the tomcat log when I go to the config
screen for the project:

SEVERE: Servlet.service() for servlet Stapler threw exception
java.lang.NullPointerException
at hudson.scm.SubversionSCM$DescriptorImpl
$SVNAuthenticationProviderImpl.requestClientAuthentication(SubversionSCM.java:732)
at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getFirstAuthentication
(DefaultSVNAuthenticationManager.java:148)
at org.tmatesoft.svn.core.internal.io.svn.SVNGanymedConnector.open
(SVNGanymedConnector.java:62)
at org.tmatesoft.svn.core.internal.io.svn.SVNConnection.open(SVNConnection.java:60)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnection
(SVNRepositoryImpl.java:998)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.testConnection
(SVNRepositoryImpl.java:68)
at hudson.scm.SubversionSCM$DescriptorImpl$2.check(SubversionSCM.java:890)
at hudson.util.FormFieldValidator.process(FormFieldValidator.java:40)
at hudson.scm.SubversionSCM$DescriptorImpl.doSvnRemoteLocationCheck(SubversionSCM.java:
864)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:95)
at org.kohsuke.stapler.Function.bindAndinvoke(Function.java:51)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:63)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:270)
at org.kohsuke.stapler.MetaClass$9.doDispatch(MetaClass.java:240)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:270)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:207)
at org.kohsuke.stapler.Stapler.service(Stapler.java:72)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection
(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:619)