Exception during scoring in indexer panel

Scythebill was behaving weirdly when I tried entering names starting 'wa' Sometimes it threw up an error box, as below, sometimes it started inserting the letters in the wrong place. It seemed to be doing it consistently at the time, but I worked around it until I finished entering my day's moth catch, went back to the main menu and tried it again and it seems to be working now.

Harry

Comparison method violates its general contract! java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeHi(TimSort.java:899) at java.util.TimSort.mergeAt(TimSort.java:516) at java.util.TimSort.mergeForceCollapse(TimSort.java:457) at java.util.TimSort.sort(TimSort.java:254) at java.util.Arrays.sort(Arrays.java:1438) at com.google.common.collect.Ordering.sortedCopy(Ordering.java:854) at .ui.util.Scorer$3.sortedCopy(Scorer.java:99) at .ui.components.IndexerPanel.updatePopup(IndexerPanel.java:420) at .ui.components.IndexerPanel.access$200(IndexerPanel.java:81) at .ui.components.IndexerPanel$2.insertUpdate(IndexerPanel.java:153) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:201) at javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:748) at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:707) at javax.swing.text.PlainDocument.insertString(PlainDocument.java:130) at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:669) at javax.swing.text.JTextComponent.replaceSelection(JTextComponent.java:1328) at javax.swing.text.DefaultEditorKit$DefaultKeyTypedAction.actionPerformed(DefaultEditorKit.java:884) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663) at javax.swing.JComponent.processKeyBinding(JComponent.java:2882) at javax.swing.JComponent.processKeyBindings(JComponent.java:2929) at javax.swing.JComponent.processKeyEvent(JComponent.java:2845) at java.awt.Component.processEvent(Component.java:6312) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4891) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4713) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)

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