Cannot create Position that is between 2 identical positions

This is another case where the "Cannot create Position that is between 2 identical positions" occurs. In 2.6.2 a similar issue (FE-3559) was fixed, but the same error has been reported on the 2.6.3 version.

The stacktrace:

2011-08-15 10:58:51,718 ERROR [InitialPinger2 xyz] fisheye.app com.cenqua.fisheye.rep.BaseRepositoryScanner-handleSlurpException - Problem processing revisions from repo xyz due to class java.lang.IllegalArgumentException - Cannot create a position that is between two identical positions
java.lang.IllegalArgumentException: Cannot create a position that is between two identical positions
at com.cenqua.fisheye.rep.Position.createBetween(Position.java:157)
at com.cenqua.fisheye.rep.impl.CommonChangeSetDAO.createPositionForDate(CommonChangeSetDAO.java:493)
at com.cenqua.fisheye.rep.impl.CommonChangeSetDAO.determinePosition(CommonChangeSetDAO.java:384)
at com.cenqua.fisheye.rep.impl.CommonChangeSetDAO.storeAttributes(CommonChangeSetDAO.java:370)
at com.cenqua.fisheye.svn.db.SvnChangeSetDAO.storeAttributes(SvnChangeSetDAO.java:39)
at com.cenqua.fisheye.svn.db.SvnChangeSetDAO.storeAttributes(SvnChangeSetDAO.java:19)
at com.cenqua.fisheye.rep.impl.CommonChangeSetDAO.storeWithoutLimits(CommonChangeSetDAO.java:271)
at com.cenqua.fisheye.rep.impl.CommonChangeSetDAO.store(CommonChangeSetDAO.java:258)
at com.cenqua.fisheye.svn.DiffChangeSetProcessor.processChangeSet(DiffChangeSetProcessor.java:370)
at com.cenqua.fisheye.svn.DiffChangeSetProcessor.createChangeSet(DiffChangeSetProcessor.java:304)
at com.cenqua.fisheye.svn.SvnRepositoryScanner.slurpRevisionBlock(SvnRepositoryScanner.java:431)
at com.cenqua.fisheye.rep.RepositoryScanner.processRevisions(RepositoryScanner.java:153)
at com.cenqua.fisheye.rep.BaseRepositoryScanner.slurpRepository(BaseRepositoryScanner.java:299)
at com.cenqua.fisheye.rep.BaseRepositoryScanner.doSlurpTransaction(BaseRepositoryScanner.java:266)
at com.cenqua.fisheye.rep.BaseRepositoryScanner.ping(BaseRepositoryScanner.java:199)
at com.cenqua.fisheye.rep.BaseRepositoryEngine.doSlurp(BaseRepositoryEngine.java:90)
at com.cenqua.fisheye.rep.RepositoryEngine.slurp(RepositoryEngine.java:390)
at com.cenqua.fisheye.rep.ping.OneOffPingRequest.doRequest(OneOffPingRequest.java:25)
at com.cenqua.fisheye.rep.ping.PingRequest.process(PingRequest.java:67)
at com.cenqua.fisheye.rep.RepositoryHandle.processPingRequests(RepositoryHandle.java:132)
at com.cenqua.fisheye.rep.RepositoryHandle.queuePingRequest(RepositoryHandle.java:122)
at com.cenqua.fisheye.rep.ping.PingRequest.run(PingRequest.java:33)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)