Log full of unknown swimlane errors

2012-11-13 05:05:18,594 TP-Processor14 ERROR martin 305x9677x4 r28yaa 59.167.133.12,59.167.133.77 /rest/greenhopper/1.0/rapidviews/list.json [service.rapid.view.RapidViewAOMapper] Rapid View id=13 has unknown swimlane strategy 'null' – setti
ng to 'none'