Open Query Builder and connect to SQL Server 2000 (192.168.1.54)

Add table Rafflenbeul$Item Ledger Entry

Toggle in the table column as shown in picture and you get an exception

AWT Error:
java.lang.NullPointerException
 at com.aquafold.datastudio.tools.querybuilder.ac.equals(Unknown Source)
 at javax.swing.JComboBox.contentsChanged(JComboBox.java:1310)
 at javax.swing.JComboBox.intervalRemoved(JComboBox.java:1333)
 at javax.swing.AbstractListModel.fireIntervalRemoved(AbstractListModel.java:161)
 at javax.swing.DefaultComboBoxModel.removeAllElements(DefaultComboBoxModel.java:169)
 at com.aquafold.datastudio.tools.querybuilder.aa.a(Unknown Source)
 at com.aquafold.datastudio.tools.querybuilder.aM.prepareEditor(Unknown Source)
 at javax.swing.JTable.editCellAt(JTable.java:3436)
 at com.jidesoft.grid.JideTable.editCellAt(Unknown Source)
 at com.jidesoft.grid.CellSpanTable.editCellAt(Unknown Source)
 at com.aquafold.datastudio.tools.querybuilder.aM.editCellAt(Unknown Source)
 at javax.swing.plaf.basic.BasicTableUI$Handler.mouseReleasedDND(BasicTableUI.java:1160)
 at javax.swing.plaf.basic.BasicTableUI$Handler.mouseReleased(BasicTableUI.java:1130)
 at com.jidesoft.swing.DelegateMouseInputListener.mouseReleased(Unknown Source)
 at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:273)
 at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
 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 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)