java.lang.NullPointerException
   at org.netbeans.core.startup.preferences.NbPreferences.put(NbPreferences.java:158)
   at org.netbeans.modules.derby.DerbyDatabasesImpl.registerDatabase(DerbyDatabasesImpl.java:464)
   at org.netbeans.modules.derby.DerbyDatabasesImpl.createDatabase(DerbyDatabasesImpl.java:276)
   at org.netbeans.modules.derby.api.DerbyDatabases.createDatabase(DerbyDatabases.java:147)
   at org.netbeans.modules.derby.RegisterDerby$1.run(RegisterDerby.java:193)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)