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java.util.ConcurrentModificationException: 	at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)	at java.util.LinkedList$ListItr.next(Unknown Source)	at mobac.gui.mapview.JMapViewer.paintComponent(JMapViewer.java:375)	at mobac.gui.mapview.PreviewMap.paintComponent(PreviewMap.java:207)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JComponent.paintChildren(Unknown Source)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JLayeredPane.paint(Unknown Source)	at javax.swing.JComponent.paintChildren(Unknown Source)	at javax.swing.JComponent.paint(Unknown Source)	at javax.swing.JComponent.paintToOffscreen(Unknown Source)	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)	at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)	at javax.swing.RepaintManager.paint(Unknown Source)	at javax.swing.JComponent._paintImmediately(Unknown Source)	at javax.swing.JComponent.paintImmediately(Unknown Source)	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)	at javax.swing.RepaintManager.access$700(Unknown Source)	at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)	at java.awt.EventQueue.access$200(Unknown Source)	at java.awt.EventQueue$3.run(Unknown Source)	at java.awt.EventQueue$3.run(Unknown Source)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at mobac.utilities.GUIExceptionHandler$EventQueueProxy.dispatchEvent(GUIExceptionHandler.java:299)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)