ArchiveFilesReportGenerator seems to be vulnerable to noise in heritrixOut

Sep 23, 2014 10:14:02 AM dk.netarkivet.common.utils.EMailNotifications sendMailNotifications
SEVERE: Mailing NetarchiveSuite-ERROR: Trouble during postprocessing of files in '/home/prod/PROD/kb-prod-har-006/harvester_low_8082/214337_1411241632726'. Errors accumulated during the postprocessing: warc file 214337-217-20140920193402-00001-kb-prod-har-006.kb.dk.warc has no previous Opened record!

dk.netarkivet.common.exceptions.ArgumentNotValid: warc file 214337-217-20140920193402-00001-kb-prod-har-006.kb.dk.warc has no previous Opened record!
at dk.netarkivet.harvester.harvesting.ArchiveFilesReportGenerator.parseHeritrixOut(ArchiveFilesReportGenerator.java:284)
at dk.netarkivet.harvester.harvesting.ArchiveFilesReportGenerator.generateReport(ArchiveFilesReportGenerator.java:192)
at dk.netarkivet.harvester.harvesting.HarvestDocumentation.writeHarvestDetails(HarvestDocumentation.java:460)
at dk.netarkivet.harvester.harvesting.HarvestDocumentation.documentHarvest(HarvestDocumentation.java:169)
at dk.netarkivet.harvester.harvesting.HarvestController.storeFiles(HarvestController.java:354)
at dk.netarkivet.harvester.harvesting.distribute.HarvestControllerServer.processHarvestInfoFile(HarvestControllerServer.java:648)
at dk.netarkivet.harvester.harvesting.distribute.HarvestControllerServer.access$400(HarvestControllerServer.java:100)
at dk.netarkivet.harvester.harvesting.distribute.HarvestControllerServer$HarvesterThread.run(HarvestControllerServer.java:772)
Sep 23, 2014 10:14:02 AM dk.netarkivet.harvester.harvesting.distribute.HarvestControllerSe