NullPointerException in VideoSegmentationWOH

Steps to reproduce: 1. Remove the service configuration at org.opencastproject.analysis.vsegmenter.VideoSegmenter.properties 2. Enable video segmentation in the workflow 3. Run a recording through {noformat} 2015-02-09 13:53:23 ERROR (WorkflowOperationWorker:168) - Workflow operation 'operation:'extract-text', position:25, state:'FAILED'' failedjava.lang.NullPointerException at org.opencastproject.workflow.handler.TextAnalysisWorkflowOperationHandler.getStabilityThreshold(TextAnalysisWorkflowOperationHandler.java:545) at org.opencastproject.workflow.handler.TextAnalysisWorkflowOperationHandler.extractVideoText(TextAnalysisWorkflowOperationHandler.java:245) at org.opencastproject.workflow.handler.TextAnalysisWorkflowOperationHandler.start(TextAnalysisWorkflowOperationHandler.java:206) at org.opencastproject.workflow.impl.WorkflowOperationWorker.start(WorkflowOperationWorker.java:222) at org.opencastproject.workflow.impl.WorkflowOperationWorker.execute(WorkflowOperationWorker.java:148) at org.opencastproject.workflow.impl.WorkflowServiceImpl.runWorkflowOperation(WorkflowServiceImpl.java:830) at org.opencastproject.workflow.impl.WorkflowServiceImpl.process(WorkflowServiceImpl.java:1865) at org.opencastproject.workflow.impl.WorkflowServiceImpl$JobRunner.call(WorkflowServiceImpl.java:2273) at org.opencastproject.workflow.impl.WorkflowServiceImpl$JobRunner.call(WorkflowServiceImpl.java:2239) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) {noformat}