Ok, so whenever a player logs into my server, this comes up after their name. 18:15:28 [INFO] dave47561879 [/5.26.30.146:57104] logged in with entity id 66 at ([world] 136.0625, 65.0, -227.28125) 18:15:28 [INFO] [AutoSave] AutoSaveThread Started: Interval is 300 seconds, Warn Times are 0 18:15:29 [SEVERE] java.lang.NullPointerException 18:15:29 [SEVERE] at onethatwalks.satools.SAToolsGUI$23.valueChanged(SAToo lsGUI.java:1471) 18:15:29 [SEVERE] at javax.swing.JList.fireSelectionValueChanged(Unknown S ource) 18:15:29 [SEVERE] at javax.swing.JList$ListSelectionHandler.valueChanged(U nknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.fireValueChange d(Unknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.fireValueChange d(Unknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.fireValueChange d(Unknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.changeSelection (Unknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.changeSelection (Unknown Source) 18:15:29 [SEVERE] at javax.swing.DefaultListSelectionModel.setSelectionInt erval(Unknown Source) 18:15:29 [SEVERE] at javax.swing.JList.setSelectedIndex(Unknown Source) 18:15:29 [SEVERE] at javax.swing.JList.setSelectedValue(Unknown Source) 18:15:29 [SEVERE] at onethatwalks.satools.listeners.SAToolsPlayerListener$ 1.run(SAToolsPlayerListener.java:61) 18:15:29 [SEVERE] at org.bukkit.craftbukkit.scheduler.CraftWorker.run(Craf tWorker.java:34) 18:15:29 [SEVERE] at java.lang.Thread.run(Unknown Source) > whats wrong and how do i fix it? the build is CB 1000