Purge task problem : Not enough parts to the path

I keep on having these logs :
I'm using archiva 1.3.1.
I thought this was fixed in MRM-1151, but I still get this :

2010-07-20 14:00:36,868 [pool-2-thread-1] INFO org.apache.maven.archiva.scheduled.executors.ArchivaRepositoryScanningTaskExecutor - Executing task from queue with job name: RepositoryTask [repositoryId=sofaxis-snapshot, resourceFile=null, scanAll=false, updateRelatedArtifacts=false]
2010-07-20 14:00:36,868 [pool-2-thread-1] INFO org.apache.maven.archiva.repository.scanner.RepositoryScannerInstance - Walk Started: [sofaxis-snapshot] D:\maven_archiva_data\data\repositories\sofaxis-snapshot
2010-07-20 14:00:36,868 [pool-2-thread-1] ERROR org.apache.maven.archiva.repository.scanner.functors.ConsumerProcessFileClosure - Consumer [repository-purge] had an error when processing file [D:\maven_archiva_data\data\repositories\sofaxis-snapshot\.index\nexus-maven-repository-index.zip]: Not enough parts to the path [.index\nexus-maven-repository-index.zip] to construct an ArchivaArtifact from. (Requires at least 4 parts)
org.apache.maven.archiva.consumers.ConsumerException: Not enough parts to the path [.index\nexus-maven-repository-index.zip] to construct an ArchivaArtifact from. (Requires at least 4 parts)
at org.apache.maven.archiva.consumers.core.repository.RepositoryPurgeConsumer.processFile(RepositoryPurgeConsumer.java:174)
at org.apache.maven.archiva.repository.scanner.functors.ConsumerProcessFileClosure.execute(ConsumerProcessFileClosure.java:50)
at org.apache.commons.collections.functors.IfClosure.execute(IfClosure.java:117)
at org.apache.commons.collections.CollectionUtils.forAllDo(CollectionUtils.java:388)
at org.apache.maven.archiva.repository.scanner.RepositoryScannerInstance.directoryWalkStep(RepositoryScannerInstance.java:137)
at org.codehaus.plexus.util.DirectoryWalker.fireStep(DirectoryWalker.java:174)
at org.codehaus.plexus.util.DirectoryWalker.scanDir(DirectoryWalker.java:392)
at org.codehaus.plexus.util.DirectoryWalker.scanDir(DirectoryWalker.java:386)
at org.codehaus.plexus.util.DirectoryWalker.scan(DirectoryWalker.java:345)
at org.apache.maven.archiva.repository.scanner.DefaultRepositoryScanner.scan(DefaultRepositoryScanner.java:117)
at org.apache.maven.archiva.repository.scanner.DefaultRepositoryScanner.scan(DefaultRepositoryScanner.java:61)
at org.apache.maven.archiva.scheduled.executors.ArchivaRepositoryScanningTaskExecutor.executeTask(ArchivaRepositoryScanningTaskExecutor.java:144)
at org.codehaus.plexus.taskqueue.execution.ThreadedTaskQueueExecutor$ExecutorRunnable$1.run(ThreadedTaskQueueExecutor.java:116)
at edu.emory.mathcs.backport.java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)
at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.run(FutureTask.java:176)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.maven.archiva.consumers.core.repository.RepositoryPurgeException: Not enough parts to the path [.index\nexus-maven-repository-index.zip] to construct an ArchivaArtifact from. (Requires at least 4 parts)
at org.apache.maven.archiva.consumers.core.repository.CleanupReleasedSnapshotsRepositoryPurge.process(CleanupReleasedSnapshotsRepositoryPurge.java:194)
at org.apache.maven.archiva.consumers.core.repository.RepositoryPurgeConsumer.processFile(RepositoryPurgeConsumer.java:167)
... 17 more
Caused by: org.apache.maven.archiva.repository.layout.LayoutException: Not enough parts to the path [.index\nexus-maven-repository-index.zip] to construct an ArchivaArtifact from. (Requires at least 4 parts)
at org.apache.maven.archiva.repository.content.DefaultPathParser.toArtifactReference(DefaultPathParser.java:65)
at org.apache.maven.archiva.repository.content.AbstractDefaultRepositoryContent.toArtifactReference(AbstractDefaultRepositoryContent.java:54)
at org.apache.maven.archiva.repository.content.ManagedDefaultRepositoryContent.toArtifactReference(ManagedDefaultRepositoryContent.java:340)
at org.apache.maven.archiva.consumers.core.repository.CleanupReleasedSnapshotsRepositoryPurge.process(CleanupReleasedSnapshotsRepositoryPurge.java:103)
... 18 more