Subversivo "Comparar con revisión" siempre falla en Eclipse Kepler

Cuando trato de comparar un file actual en Eclipse Kepler con una revisión anterior siempre recibo el post de que no hay diferencia (lo cual no es cierto) seguido de la pantalla de informe de error que dice:

> SVN: '0x00400103: Compare with Revision' operation finished with > error: null java.lang.NullPointerException 

De hecho, cambié de Subclipse a Subversivo porque Comparar era mucho más avanzado allí, pero después de migrar el eclipse de la computadora al otro (lo que implicó volver a vincular mis proyectos a sus repositorys) no puedo usar Comparar más.

La sección en .metadata/.logs dice:

 !ENTRY org.eclipse.team.svn.core.svnnature 4 0 2014-01-17 11:09:58.870 !MESSAGE SVN: '0x00400103: Compare with Revision' operation finished with error !SUBENTRY 1 org.eclipse.team.svn.core.svnnature 4 0 2014-01-17 11:09:58.870 !MESSAGE SVN: '0x00400103: Compare with Revision' operation finished with error: null !STACK 0 java.lang.NullPointerException at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgDiffSummarize.doDiffReposRepos(SvnNgDiffSummarize.java:229) at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgDiffSummarize.doDiff(SvnNgDiffSummarize.java:86) at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgDiffSummarize.run(SvnNgDiffSummarize.java:61) at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgDiffSummarize.run(SvnNgDiffSummarize.java:1) at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgOperationRunner.run(SvnNgOperationRunner.java:20) at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20) at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1149) at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:294) at org.tmatesoft.svn.core.javahl17.SVNClientImpl.diffSummarize(SVNClientImpl.java:1036) at org.polarion.team.svn.connector.svnkit.SVNKitConnector.diffStatus(SVNKitConnector.java:1599) at org.eclipse.team.svn.core.extension.factory.ThreadNameModifier.diffStatus(ThreadNameModifier.java:158) at org.eclipse.team.svn.core.utility.SVNUtility.diffStatus(SVNUtility.java:318) at org.eclipse.team.svn.ui.operation.CompareResourcesInternalOperation$3.run(CompareResourcesInternalOperation.java:148) at org.eclipse.team.svn.core.utility.ProgressMonitorUtility.doSubTask(ProgressMonitorUtility.java:118) at org.eclipse.team.svn.core.operation.AbstractActionOperation.protectStep(AbstractActionOperation.java:156) at org.eclipse.team.svn.ui.operation.CompareResourcesInternalOperation.runImpl(CompareResourcesInternalOperation.java:138) at org.eclipse.team.svn.ui.operation.CompareResourcesOperation$1.runImpl(CompareResourcesOperation.java:64) at org.eclipse.team.svn.core.operation.AbstractActionOperation.run(AbstractActionOperation.java:82) at org.eclipse.team.svn.core.utility.ProgressMonitorUtility.doTask(ProgressMonitorUtility.java:104) at org.eclipse.team.svn.core.operation.CompositeOperation.runImpl(CompositeOperation.java:99) at org.eclipse.team.svn.core.operation.AbstractActionOperation.run(AbstractActionOperation.java:82) at org.eclipse.team.svn.core.utility.ProgressMonitorUtility.doTask(ProgressMonitorUtility.java:104) at org.eclipse.team.svn.core.operation.CompositeOperation.runImpl(CompositeOperation.java:99) at org.eclipse.team.svn.core.operation.AbstractActionOperation.run(AbstractActionOperation.java:82) at org.eclipse.team.svn.core.operation.LoggedOperation.run(LoggedOperation.java:40) at org.eclipse.team.svn.core.utility.ProgressMonitorUtility.doTask(ProgressMonitorUtility.java:104) at org.eclipse.team.svn.core.utility.ProgressMonitorUtility.doTaskExternal(ProgressMonitorUtility.java:90) at org.eclipse.team.svn.ui.utility.DefaultCancellableOperationWrapper.run(DefaultCancellableOperationWrapper.java:55) at org.eclipse.team.svn.ui.utility.SVNTeamOperationWrapper.run(SVNTeamOperationWrapper.java:35) at org.eclipse.team.internal.ui.actions.JobRunnableContext.run(JobRunnableContext.java:144) at org.eclipse.team.internal.ui.actions.JobRunnableContext$ResourceJob.runInWorkspace(JobRunnableContext.java:72) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) 

Este parece ser el error Eclipse 425740 que está cerrado como un error en el código SVN de terceros: http://issues.tmatesoft.com/issue/SVNKIT-427