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java.lang.NullPointerException: 	at org.compiere.grid.ed.VLocator.setValue(VLocator.java:317)	at org.compiere.grid.ed.VLocator.setValue(VLocator.java:293)	at org.compiere.grid.ed.VLocator.setDefault_Locator_ID(VLocator.java:633)	at org.compiere.grid.ed.VLocator.(VLocator.java:176)	at org.compiere.grid.ed.VEditorFactory.getEditor(VEditorFactory.java:213)	at org.compiere.grid.GridController.init(GridController.java:425)	at org.compiere.grid.GridController.activate(GridController.java:641)	at org.compiere.apps.APanel.stateChanged(APanel.java:1475)	at javax.swing.JTabbedPane.fireStateChanged(JTabbedPane.java:416)	at javax.swing.JTabbedPane$ModelListener.stateChanged(JTabbedPane.java:270)	at javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingleSelectionModel.java:132)	at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingleSelectionModel.java:67)	at javax.swing.JTabbedPane.setSelectedIndexImpl(JTabbedPane.java:616)	at javax.swing.JTabbedPane.setSelectedIndex(JTabbedPane.java:591)	at org.compiere.grid.VTabbedPane.setSelectedIndex(VTabbedPane.java:314)	at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mousePressed(BasicTabbedPaneUI.java:3647)	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)	at java.awt.Component.processMouseEvent(Component.java:6532)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)	at java.awt.Component.processEvent(Component.java:6300)	at java.awt.Container.processEvent(Container.java:2236)	at java.awt.Component.dispatchEventImpl(Component.java:4891)	at java.awt.Container.dispatchEventImpl(Container.java:2294)	at java.awt.Component.dispatchEvent(Component.java:4713)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4522)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)	at java.awt.Container.dispatchEventImpl(Container.java:2280)	at java.awt.Window.dispatchEventImpl(Window.java:2750)	at java.awt.Component.dispatchEvent(Component.java:4713)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)	at java.awt.EventQueue.access$500(EventQueue.java:97)	at java.awt.EventQueue$3.run(EventQueue.java:709)	at java.awt.EventQueue$3.run(EventQueue.java:703)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)	at java.awt.EventQueue$4.run(EventQueue.java:731)	at java.awt.EventQueue$4.run(EventQueue.java:729)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)