I had been working on a build for several days and things were working just fine. After I submitted a minor code change I got the crash posted below. Every build in the repository seemed to be affected. A reboot was necessary to get things back to normal. Any ideas?

Stacktrace:
Fetching files to fetch destination "C:\TeamConcertBuild\XXX" ...
com.ibm.team.repository.common.transport.ServiceMethodInvocationError: java.lang.NullPointerException
at com.ibm.team.repository.transport.client.RemoteTeamService.getAppropriateException(RemoteTeamService.java:571)
at com.ibm.team.repository.transport.client.RemoteTeamService.executeMethod(RemoteTeamService.java:474)
at com.ibm.team.repository.transport.client.RemoteTeamService.invoke(RemoteTeamService.java:184)
at com.ibm.team.repository.transport.client.ServiceInvocationHandler.invoke(ServiceInvocationHandler.java:43)
at $Proxy20.getFileTreeByVersionable(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:59)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:39)
at java.lang.reflect.Method.invoke(Method.java:612)
at com.ibm.team.repository.client.internal.ServiceInterfaceProxy.invokeServiceCall(ServiceInterfaceProxy.java:149)
at com.ibm.team.repository.client.internal.ServiceInterfaceProxy.invoke(ServiceInterfaceProxy.java:84)
at $Proxy20.getFileTreeByVersionable(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:59)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:39)
at java.lang.reflect.Method.invoke(Method.java:612)
at com.ibm.team.scm.client.internal.ScmServiceInterfaceProxy$2.run(ScmServiceInterfaceProxy.java:163)
at com.ibm.team.repository.client.internal.TeamRepository$3.run(TeamRepository.java:1129)
at com.ibm.team.repository.common.transport.CancelableCaller.call(CancelableCaller.java:76)
at com.ibm.team.repository.client.internal.TeamRepository.callCancelableService(TeamRepository.java:1122)
at com.ibm.team.scm.client.internal.ScmClientLibraryContext.callCancelableService(ScmClientLibraryContext.java:69)
at com.ibm.team.scm.client.internal.ScmServiceInterfaceProxy.invokeCancelableService(ScmServiceInterfaceProxy.java:160)
at com.ibm.team.scm.client.internal.ScmServiceInterfaceProxy.invoke(ScmServiceInterfaceProxy.java:90)
at $Proxy20.getFileTreeByVersionable(Unknown Source)
at com.ibm.team.filesystem.client.internal.FileSystemServiceProxy.getFileTreeByVersionable(FileSystemServiceProxy.java:259)
at com.ibm.team.filesystem.client.internal.operations.LoadOperation.load(LoadOperation.java:722)
at com.ibm.team.filesystem.client.internal.operations.LoadOperation.doLoad(LoadOperation.java:434)
at com.ibm.team.filesystem.client.internal.operations.LocalFileSystemLoadOperation.execute(LocalFileSystemLoadOperation.java:97)
at com.ibm.team.filesystem.client.internal.operations.FileSystemOperation.run(FileSystemOperation.java:89)
at com.ibm.team.build.internal.scm.SourceControlUtility.updateFileCopyArea(SourceControlUtility.java:279)
at com.ibm.team.build.internal.engine.JazzScmPreBuildParticipant.preBuild(JazzScmPreBuildParticipant.java:152)
at com.ibm.team.build.internal.engine.BuildLoop.invokePreBuildParticipants(BuildLoop.java:574)
at com.ibm.team.build.internal.engine.BuildLoop$2.run(BuildLoop.java:430)
at java.lang.Thread.run(Thread.java:735)
Caused by: java.lang.NullPointerException
at com.ibm.team.filesystem.service.internal.operations.FileTreeOperation.createUpdate(FileTreeOperation.java:190)
at com.ibm.team.filesystem.service.internal.operations.FileTreeOperation.internalGetChildrenUpdates(FileTreeOperation.java:174)
at com.ibm.team.filesystem.service.internal.operations.FileTreeOperation.run(FileTreeOperation.java:81)
at com.ibm.team.filesystem.service.internal.FilesystemServiceInternal.getFileTreeByVersionable(FilesystemServiceInternal.java:379)
at com.ibm.team.filesystem.service.internal.FilesystemService$8.run(FilesystemService.java:375)
at com.ibm.team.repository.service.internal.TransactionService$1.run(TransactionService.java:99)
at com.ibm.team.repository.service.internal.rdb.RepositoryDatabase$Transaction.run(RepositoryDatabase.java:455)
at com.ibm.team.repository.service.internal.rdb.RepositoryDatabase.runTransaction(RepositoryDatabase.java:286)
at com.ibm.team.repository.service.internal.rdb.RepositoryDatabase.runInTransaction(RepositoryDatabase.java:241)
at com.ibm.team.repository.service.internal.TransactionService.runInTransaction(TransactionService.java:74)
at com.ibm.team.repository.service.internal.TransactionService.runInTransaction(TransactionService.java:63)
at sun.reflect.GeneratedMethodAccessor432.invoke(null)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:375)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:361)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:55)
at $Proxy1041.runInTransaction(null)
at com.ibm.team.repository.service.AbstractService.runInTransaction(AbstractService.java:723)
at com.ibm.team.filesystem.service.internal.FilesystemService.getFileTreeByVersionable(FilesystemService.java:369)
at sun.reflect.GeneratedMethodAccessor554.invoke(null)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:375)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:361)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:55)
at $Proxy1202.getFileTreeByVersionable(null)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at com.ibm.team.repository.servlet.AbstractTeamServerServlet.handleMethod(AbstractTeamServerServlet.java:1133)
at com.ibm.team.repository.servlet.AbstractTeamServerServlet.executeMethod(AbstractTeamServerServlet.java:883)
at com.ibm.team.repository.servlet.AbstractTeamServerServlet.doPost(AbstractTeamServerServlet.java:685)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at com.ibm.team.repository.servlet.AbstractTeamServerServlet.service(AbstractTeamServerServlet.java:1436)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:111)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:115)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1075)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:550)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3391)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:267)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:811)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1455)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:115)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
at com.ibm.team.repository.common.internal.marshal.util.MarshallerUtil.decodeExceptions(MarshallerUtil.java:326)
at com.ibm.team.repository.common.internal.marshal.util.MarshallerUtil.decodeExceptions(MarshallerUtil.java:296)
at com.ibm.team.repository.common.internal.marshal.util.MarshallerUtil.decodeFault(MarshallerUtil.java:261)
at com.ibm.team.repository.transport.client.RemoteTeamService.constructExceptionFromFault(RemoteTeamService.java:546)
at com.ibm.team.repository.transport.client.RemoteTeamService.executeMethod(RemoteTeamService.java:461)
... 32 more


Thanks,
-Dave