zimport java.lang.IllegalArgumentException: Block size is too small, must have space for at least 3 children

Hi,

When running zimport to load source into RTC, we see message "java.lang.IllegalArgumentException: Block size is too small, must have space for at least 3 children".  Is this a known problem? Is there a work around?
We tried deleting and redefining the SCM_WORK directory. Same results. Log detail follows:

 Metadata underneath the SCM_WORK directory has become corrupted. Try changing the value of SCM_WORK and re-running the zimport command.
com.ibm.team.filesystem.client.FileSystemException: Error setting loaded component info
    at com.ibm.team.filesystem.client.internal.core.SharingMetadata2.isLoaded(SharingMetadata2.java:3101)
    at com.ibm.team.filesystem.client.internal.copyfileareas.CopyFileAreaStore.internalIsLoaded(CopyFileAreaStore.java:3069)
    at com.ibm.team.filesystem.client.internal.copyfileareas.CopyFileAreaManager.getCopyFileAreasForConfiguration(CopyFileAreaManager.java:474)
    at com.ibm.team.filesystem.client.internal.share.ShareOperation$ShareRequest.getCopyFileAreaLocksNeeded(ShareOperation.java:476)
    at com.ibm.team.filesystem.client.internal.share.ShareOperation.doShare(ShareOperation.java:945)
    at com.ibm.team.filesystem.client.internal.share.ShareOperation.access$1(ShareOperation.java:892)
    at com.ibm.team.filesystem.client.internal.share.ShareOperation$1.run(ShareOperation.java:851)
    at com.ibm.team.filesystem.rcp.core.internal.resources.ResourceSharingManager$1.run(ResourceSharingManager.java:76)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975)
    at com.ibm.team.filesystem.rcp.core.internal.resources.ResourceSharingManager.runWithinFileSystemLock(ResourceSharingManager.java:88)
    at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.runWithinFileSystemLock(FileSystemOperation.java:164)
    at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.runWithinFileSystemLock(FileSystemOperation.java:144)
    at com.ibm.team.filesystem.client.internal.share.ShareOperation.execute(ShareOperation.java:858)
    at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.run(FileSystemOperation.java:89)
    at com.ibm.teamz.internal.zimport.cli.subcommand.ZImportCommand.doRun(ZImportCommand.java:508)
    at com.ibm.teamz.internal.zimport.cli.subcommand.ZImportCommand.run(ZImportCommand.java:262)
    at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.run(SubcommandLauncher.java:673)
    at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.doStart(SubcommandLauncher.java:402)
    at com.ibm.team.filesystem.cli.core.internal.SubcommandLauncher.run(SubcommandLauncher.java:179)
    at com.ibm.team.filesystem.cli.core.internal.Application.start(Application.java:50)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1384)
Caused by: com.ibm.team.internal.repository.rcp.dbhm.DBHMException: java.lang.IllegalArgumentException: Block size is too small, must have space for at least 3 children
    at com.ibm.team.filesystem.client.internal.Store.<init>(Store.java:35)
    at com.ibm.team.filesystem.client.internal.core.LoadedComponentsStore.<init>(LoadedComponentsStore.java:35)
    at com.ibm.team.filesystem.client.internal.core.SharingMetadata2.initLoadedComponents(SharingMetadata2.java:1852)
    at com.ibm.team.filesystem.client.internal.core.SharingMetadata2.isLoaded(SharingMetadata2.java:3093)
    ... 32 more
Caused by: java.lang.IllegalArgumentException: Block size is too small, must have space for at least 3 children
    at com.ibm.team.internal.repository.rcp.dbhm.BTree.init(BTree.java:69)
    at com.ibm.team.internal.repository.rcp.dbhm.PersistentBTree.<init>(PersistentBTree.java:34)
    at com.ibm.team.internal.repository.rcp.dbhm.PersistentBTreeHeap.getBTreeImpl(PersistentBTreeHeap.java:122)
    at com.ibm.team.internal.repository.rcp.dbhm.PersistentBTreeHeap.init(PersistentBTreeHeap.java:111)
    at com.ibm.team.internal.repository.rcp.dbhm.PersistentBTreeHeap.<init>(PersistentBTreeHeap.java:38)
    at com.ibm.team.filesystem.client.internal.PersistentHeapManager$AutoClosingPersistentFileHeap.<init>(PersistentHeapManager.java:57)
    at com.ibm.team.filesystem.client.internal.PersistentHeapManager.getPersistentFileHeap(PersistentHeapManager.java:31)
    at com.ibm.team.filesystem.client.internal.Store.newPersistentBTreeHeap(Store.java:49)
    at com.ibm.team.internal.repository.rcp.dbhm.PersistentDiskBackedHashMap.initFromFile(PersistentDiskBackedHashMap.java:79)
    at com.ibm.team.filesystem.client.internal.Store.<init>(Store.java:29)
    ... 35 more
Problem running 'zimport':
CRHTC0610E An error occurred while sharing the components.