also, it throws an npe:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 256
at com.affymetrix.igb.tiers.TrackStyle.getScoreColor(TrackStyle.java:1072)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.getSymColor(AnnotationGlyphFactory.java:362)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.determineGlyph(AnnotationGlyphFactory.java:220)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.determinePGlyph(AnnotationGlyphFactory.java:176)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.addToTier(AnnotationGlyphFactory.java:158)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.addLeafsToTier(AnnotationGlyphFactory.java:121)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.addLeafsToTier(AnnotationGlyphFactory.java:118)
at com.affymetrix.igb.viewmode.AnnotationGlyphFactory.getViewModeGlyph(AnnotationGlyphFactory.java:570)
at com.affymetrix.igb.shared.TierGlyph.setViewModeGlyph(TierGlyph.java:103)
at com.affymetrix.igb.shared.TierGlyph.setInfo(TierGlyph.java:472)
at com.affymetrix.igb.view.TrackView.addAnnotationGlyphs(TrackView.java:232)
at com.affymetrix.igb.view.TrackView.addTracks(TrackView.java:153)
at com.affymetrix.igb.view.SeqMapView.addAnnotationTracks(SeqMapView.java:1246)
at com.affymetrix.igb.view.SeqMapView.addGlyphs(SeqMapView.java:988)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:805)
at com.affymetrix.igb.view.SeqMapView.updatePanel(SeqMapView.java:2721)
at com.affymetrix.igb.action.SeqMapViewActionA.refreshMap(SeqMapViewActionA.java:88)
at com.affymetrix.igb.action.SetColorByScoreAction.updateColorByScore(SetColorByScoreAction.java:71)
at com.affymetrix.igb.action.SetColorByScoreAction.actionPerformed(SetColorByScoreAction.java:77)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
at java.awt.Component.processMouseEvent(Component.java:6375)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6140)
at java.awt.Container.processEvent(Container.java:2083)
at java.awt.Component.dispatchEventImpl(Component.java:4737)
at java.awt.Container.dispatchEventImpl(Container.java:2141)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
at java.awt.Container.dispatchEventImpl(Container.java:2127)
at java.awt.Window.dispatchEventImpl(Window.java:2482)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684)
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.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:657)
at java.awt.EventQueue$2.run(EventQueue.java:655)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:654)
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)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.affymetrix.genoviz.bioviews.Scene.removeGlyph(Scene.java:391)
at com.affymetrix.genoviz.widget.NeoMap.removeItem(NeoMap.java:1021)
at com.affymetrix.igb.tiers.AffyTieredMap.removeItem(AffyTieredMap.java:277)
at com.affymetrix.igb.tiers.AffyTieredMap.removeTier(AffyTieredMap.java:296)
at com.affymetrix.igb.tiers.AffyLabelledTierMap.removeTier(AffyLabelledTierMap.java:251)
at com.affymetrix.igb.view.SeqMapView.copyMapTierGlyphs(SeqMapView.java:973)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:779)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:727)
at com.affymetrix.igb.view.SeqMapView.setAnnotatedSeq(SeqMapView.java:713)
at com.affymetrix.igb.view.SeqMapView.seqSelectionChanged(SeqMapView.java:2370)
at com.affymetrix.genometryImpl.GenometryModel.fireSeqSelectionEvent(GenometryModel.java:208)
at com.affymetrix.genometryImpl.GenometryModel.setSelectedSeq(GenometryModel.java:188)
at com.affymetrix.genometryImpl.GenometryModel.setSelectedSeq(GenometryModel.java:171)
at com.affymetrix.igb.view.SeqGroupView.valueChanged(SeqGroupView.java:348)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:167)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:137)
at javax.swing.DefaultListSelectionModel.setValueIsAdjusting(DefaultListSelectionModel.java:668)
at com.jidesoft.grid.JideTable$24.setValueIsAdjusting(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI$Handler.setValueIsAdjusting(BasicTableUI.java:923)
at javax.swing.plaf.basic.BasicTableUI$Handler.mouseReleased(BasicTableUI.java:1136)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
at java.awt.Component.processMouseEvent(Component.java:6375)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6140)
at java.awt.Container.processEvent(Container.java:2083)
at java.awt.Component.dispatchEventImpl(Component.java:4737)
at java.awt.Container.dispatchEventImpl(Container.java:2141)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
at java.awt.Container.dispatchEventImpl(Container.java:2127)
at java.awt.Window.dispatchEventImpl(Window.java:2482)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684)
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.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:657)
at java.awt.EventQueue$2.run(EventQueue.java:655)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:654)
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)