org.netbeans.modules.keyring.kde.KWalletProvider$KwalletException: error while trying to access KWallet, during save
   at org.netbeans.modules.keyring.kde.KWalletProvider.save(KWalletProvider.java:96)
   at org.netbeans.api.keyring.Keyring.save(Keyring.java:109)
   at org.netbeans.modules.db.explorer.DatabaseConnectionConvertor$AtomicWriter.write(DatabaseConnectionConvertor.java:403)
   at org.netbeans.modules.db.explorer.DatabaseConnectionConvertor$AtomicWriter.run(DatabaseConnectionConvertor.java:364)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:125)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:542)
   at org.netbeans.modules.db.explorer.DatabaseConnectionConvertor.create(DatabaseConnectionConvertor.java:257)
   at org.netbeans.modules.db.explorer.ConnectionList.add(ConnectionList.java:135)
   at org.netbeans.api.db.explorer.ConnectionManager.addConnection(ConnectionManager.java:147)
   at org.netbeans.modules.db.mysql.actions.ConnectAction.performAction(ConnectAction.java:134)
   at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:586)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:583)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2012)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2335)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:374)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:829)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:873)
   at java.awt.Component.processMouseEvent(Component.java:6108)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:5873)
   at java.awt.Container.processEvent(Container.java:2105)
   at java.awt.Component.dispatchEventImpl(Component.java:4469)
   at java.awt.Container.dispatchEventImpl(Container.java:2163)
   at java.awt.Component.dispatchEvent(Component.java:4295)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4461)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4125)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4055)
   at java.awt.Container.dispatchEventImpl(Container.java:2149)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4295)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:137)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)