NullPointerException in SQL Editor

i tried to use ctrl-h search and replace. on replace all button exception occurs. PostgreSQL 8.1.11 PostgreSQL Native Driver PostgreSQL 8.3 JDBC3 with SSL (build 603) Product: DbVisualizer Personal 6.0.10 Build: #1303 (2008/04/10 08:08) Java VM: Java HotSpot(TM) Server VM Java Version: 1.6.0_05 Java Vendor: Sun Microsystems Inc. OS Name: Linux OS Arch: i386 OS Version: 2.6.18.8-0.7-default An internal error occurred: Exception: java.lang.NullPointerException java.lang.NullPointerException The error may have affected the application state. Please notify vendor. Stack Trace: java.lang.NullPointerException at com.onseven.dbvis.K.A.A.C$2.ҹ(Z:117) at com.onseven.dbvis._.K$1.ĝ(Z:1545) at com.onseven.dbvis._.A.tableChanged(Z:2345) at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:280) at com.jidesoft.grid.SortableTableModel.tableChanged(Unknown Source) at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:280) at com.jidesoft.grid.DefaultTableModelWrapper.fireTableCellsUpdated(Unknown Source) at com.jidesoft.grid.DefaultTableModelWrapper.tableCellsUpdated(Unknown Source) at com.jidesoft.grid.FilterableTableModel.tableCellsUpdated(Unknown Source) at com.jidesoft.grid.DefaultTableModelWrapper.tableChanged(Unknown Source) at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:280) at javax.swing.table.AbstractTableModel.fireTableCellUpdated(AbstractTableModel.java:259) at com.onseven.dbvis.F.A.A.Ą(Z:3346) at com.onseven.dbvis.F.A.A.fireTableCellUpdated(Z:2383) at com.onseven.dbvis.F.A.A.setValueAt(Z:2255) at com.onseven.dbvis._.u.ă(Z:2903) at com.onseven.dbvis._.u$A$2.ā(Z:140) at com.onseven.dbvis._.u$A$2.changedUpdate(Z:1580) at javax.swing.text.AbstractDocument.fireChangedUpdate(AbstractDocument.java:214) at org.netbeans.editor.BaseDocument.fireChangedUpdate(BaseDocument.java:1019) at org.netbeans.editor.BaseDocument.findSupportChange(BaseDocument.java:312) at org.netbeans.editor.BaseDocument.access$000(BaseDocument.java:51) at org.netbeans.editor.BaseDocument$1.propertyChange(BaseDocument.java:283) at org.netbeans.editor.WeakPropertyChangeSupport.firePropertyChange(WeakPropertyChangeSupport.java:98) at org.netbeans.editor.FindSupport.firePropertyChange(FindSupport.java:628) at org.netbeans.editor.FindSupport.putFindProperties(FindSupport.java:218) at org.netbeans.editor.ext.FindDialogSupport.actionPerformed(FindDialogSupport.java:248) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6041) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5806) at java.awt.Container.processEvent(Container.java:2058) at java.awt.Component.dispatchEventImpl(Component.java:4413) at java.awt.Container.dispatchEventImpl(Container.java:2116) at java.awt.Component.dispatchEvent(Component.java:4243) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916) at java.awt.Container.dispatchEventImpl(Container.java:2102) at java.awt.Window.dispatchEventImpl(Window.java:2440) at java.awt.Component.dispatchEvent(Component.java:4243) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at com.onseven.dbvis.I.A.f.dispatchEvent(Z:2787) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)