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java.lang.NullPointerException: 	at java.lang.String.compareTo(String.java:1139)	at magic.model.MagicCardDefinition$3.compare(MagicCardDefinition.java:928)	at magic.model.MagicCardDefinition$3.compare(MagicCardDefinition.java:925)	at magic.model.MagicCondensedCardDefinition$5.compare(MagicCondensedCardDefinition.java:68)	at magic.model.MagicCondensedCardDefinition$5.compare(MagicCondensedCardDefinition.java:65)	at java.util.TimSort.countRunAndMakeAscending(TimSort.java:324)	at java.util.TimSort.sort(TimSort.java:189)	at java.util.TimSort.sort(TimSort.java:173)	at java.util.Arrays.sort(Arrays.java:659)	at java.util.Collections.sort(Collections.java:217)	at magic.ui.cardtable.CardTableModel.setCards(CardTableModel.java:118)	at magic.ui.cardtable.CardTable.setCards(CardTable.java:196)	at magic.ui.screen.DecksScreen$ScreenContent.setDeck(DecksScreen.java:236)	at magic.ui.widget.deck.DeckPicker$3$1.run(DeckPicker.java:248)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745)	at java.awt.EventQueue.access$300(EventQueue.java:103)	at java.awt.EventQueue$3.run(EventQueue.java:706)	at java.awt.EventQueue$3.run(EventQueue.java:704)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:715)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)