join 2 graphs. the split. Get:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.affymetrix.igb.trackAdjuster.TrackPreferencesSeqMapViewPanel.collectSymsAndGlyphs(TrackPreferencesSeqMapViewPanel.java:55)
at com.affymetrix.igb.trackAdjuster.TrackPreferencesSeqMapViewPanel.refreshSelection(TrackPreferencesSeqMapViewPanel.java:118)
at com.affymetrix.igb.trackAdjuster.TrackPreferencesSeqMapViewPanel.trackstylePropertyChanged(TrackPreferencesSeqMapViewPanel.java:170)
at com.affymetrix.igb.shared.TrackstylePropertyMonitor.firePropertyChanged(TrackstylePropertyMonitor.java:47)
at com.affymetrix.igb.shared.TrackstylePropertyMonitor.tableChanged(TrackstylePropertyMonitor.java:29)
at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:280)
at javax.swing.table.AbstractTableModel.fireTableDataChanged(AbstractTableModel.java:182)
at com.affymetrix.igb.prefs.TierPrefsView.refreshList(TierPrefsView.java:237)
at com.affymetrix.igb.prefs.TierPreferencesPanel.mapRefresh(TierPreferencesPanel.java:37)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:893)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:724)
at com.affymetrix.igb.trackOperations.TrackOperationsTab$5.run(TrackOperationsTab.java:204)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:682)
at java.awt.EventQueue.access$000(EventQueue.java:85)
at java.awt.EventQueue$1.run(EventQueue.java:643)
at java.awt.EventQueue$1.run(EventQueue.java:641)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:652)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)