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java.lang.NullPointerException: 	at org.netbeans.jpa.modeler.jcre.wizard.JPAModelSetupPanelVisual.store(JPAModelSetupPanelVisual.java:293)	at org.netbeans.jpa.modeler.jcre.wizard.JPAModelSetupPanel.storeSettings(JPAModelSetupPanel.java:110)	at org.openide.WizardDescriptor.storeSettingsAndNotify(WizardDescriptor.java:1391)	at org.openide.WizardDescriptor.access$1800(WizardDescriptor.java:92)	at org.openide.WizardDescriptor$Listener$1.run(WizardDescriptor.java:2203)	at org.openide.WizardDescriptor.lazyValidate(WizardDescriptor.java:1516)	at org.openide.WizardDescriptor.access$2000(WizardDescriptor.java:92)	at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:2227)	at sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:487)	at com.sun.proxy.$Proxy54.actionPerformed(Unknown Source)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)	at java.awt.Component.processMouseEvent(Component.java:6535)	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:4525)	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 org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)