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java.lang.NullPointerException: 	at com.izforge.izpack.panels.PacksPanelBase$CheckBoxRenderer.getTableCellRendererComponent(Unknown Source)	at javax.swing.JTable$AccessibleJTable.getAccessibleAt(JTable.java:6982)	at apple.awt.CAccessibility$22.call(CAccessibility.java:389)	at apple.awt.CAccessibility$22.call(CAccessibility.java:368)	at apple.awt.CToolkit$CallableWrapper.run(CToolkit.java:1110)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)	at apple.awt.CToolkit$CPeerEvent.dispatch(CToolkit.java:1200)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:678)	at java.awt.EventQueue.access$000(EventQueue.java:86)	at java.awt.EventQueue$1.run(EventQueue.java:639)	at java.awt.EventQueue$1.run(EventQueue.java:637)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:648)	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)