java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.jivesoftware.spark.component.panes.CollapsiblePane.setTitle(CollapsiblePane.java:66)
at com.jivesoftware.spark.component.panes.CollapsiblePane.(CollapsiblePane.java:62)
at com.jivesoftware.sparkimpl.plugin.transcripts.ChatTranscriptPlugin$9.finished(ChatTranscriptPlugin.java:436)
at com.jivesoftware.spark.util.SwingWorker$2$1.run(SwingWorker.java:128)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)

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