java.lang.IllegalStateException: This connection is not added to the ConnectionManager.
        at org.netbeans.api.db.explorer.ConnectionManager.showConnectionDialog(ConnectionManager.java:353)
        at org.netbeans.modules.db.sql.loader.SQLEditorSupport$SQLExecutor$1.run(SQLEditorSupport.java:441)
        at org.netbeans.modules.db.sql.loader.SQLEditorSupport$SQLExecutor$1.run(SQLEditorSupport.java:440)
        at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1370)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        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)