java.lang.IllegalStateException: This connection is not added to the ConnectionManager.
   at org.netbeans.api.db.explorer.ConnectionManager.showConnectionDialog(ConnectionManager.java:352)
   at org.netbeans.modules.db.sql.loader.SQLEditorSupport$SQLExecutor$1.run(SQLEditorSupport.java:555)
   at org.netbeans.modules.db.sql.loader.SQLEditorSupport$SQLExecutor$1.run(SQLEditorSupport.java:552)
   at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1386)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)