Kepler

When I open a workflow from a KAR file that was produced by an earlier version of Kepler, I get an error from provenance 2.1.0 that I do not get from plain Kepler 2.1.0. The stack trace is below.

The KAR file is attached for reference. Once the error occurs, the workflow opens normally and will run, although provenance is disabled (red icon). Pressing the Provenance Toolbar icon to toggle it back on gives the same error message as in the stack trace below.

I am running Java 1.6.0_20 on a MacBookPro 2.66 Ghz Intel Core i7 with 8GB RAM.

ptolemy.kernel.util.NameDuplicationException: Attempt to insert object named "<Unnamed Object>" into a container that already contains an object with that name.
at ptolemy.kernel.util.NamedList.append(NamedList.java:133)
at ptolemy.kernel.util.NamedObj._addAttribute(NamedObj.java:2165)
at ptolemy.kernel.util.Attribute.setContainer(Attribute.java:398)
at org.kepler.provenance.ProvenanceRecorder.setContainer(ProvenanceRecorder.java:316)
at ptolemy.kernel.util.Attribute.<init>(Attribute.java:109)
at ptolemy.kernel.util.Attribute.<init>(Attribute.java:86)
at org.kepler.provenance.ProvenanceRecorder.<init>(ProvenanceRecorder.java:192)
at org.kepler.provenance.ProvenanceRecorder.<init>(ProvenanceRecorder.java:159)
at org.kepler.provenance.gui.ProvenanceConfigureAction.addProvenanceRecorder(ProvenanceConfigureAction.java:238)
at org.kepler.provenance.gui.ProvenanceConfigureAction.<init>(ProvenanceConfigureAction.java:142)
at org.kepler.module.provenance.Initialize.updateFrameComponents(Initialize.java:68)
at org.kepler.gui.KeplerGraphFrame._addMenus(KeplerGraphFrame.java:1315)
at ptolemy.gui.Top$5.run(Top.java:375)
at ptolemy.gui.Top.deferIfNecessary(Top.java:235)
at ptolemy.gui.Top.pack(Top.java:398)
at ptolemy.actor.gui.TableauFrame.pack(TableauFrame.java:296)
at ptolemy.actor.gui.Tableau.show(Tableau.java:355)
at ptolemy.actor.gui.Configuration.createPrimaryTableau(Configuration.java:582)
at ptolemy.actor.gui.Effigy.showTableaux(Effigy.java:492)
at ptolemy.actor.gui.Configuration._openModel(Configuration.java:1197)
at ptolemy.actor.gui.Configuration.openModel(Configuration.java:941)
at ptolemy.actor.gui.Configuration.openModel(Configuration.java:899)
at org.kepler.gui.component.OpenCompositeAction.actionPerformed(OpenCompositeAction.java:187)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$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:1223)
at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
at java.awt.Component.processMouseEvent(Component.java:6348)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6113)
at java.awt.Container.processEvent(Container.java:2085)
at java.awt.Component.dispatchEventImpl(Component.java:4714)
at java.awt.Container.dispatchEventImpl(Container.java:2143)
at java.awt.Component.dispatchEvent(Component.java:4544)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
at java.awt.Container.dispatchEventImpl(Container.java:2129)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4544)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:635)
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)