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java.lang.NullPointerException: 	at mage.cards.repository.ExpansionRepository.getSetCodes(ExpansionRepository.java:64)	at org.mage.card.arcane.ManaSymbols.loadImages(ManaSymbols.java:53)	at mage.client.MageFrame.(MageFrame.java:298)	at mage.client.MageFrame$22.run(MageFrame.java:1301)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:738)	at java.awt.EventQueue.access$300(EventQueue.java:103)	at java.awt.EventQueue$3.run(EventQueue.java:699)	at java.awt.EventQueue$3.run(EventQueue.java:697)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:708)	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)