java.lang.NullPointerException
        at org.netbeans.modules.derby.api.DerbyDatabases.extractSampleDatabase(DerbyDatabases.java:322)
        at org.netbeans.modules.derby.api.DerbyDatabases.createSampleDatabase(DerbyDatabases.java:279)
        at org.netbeans.modules.derby.Installer$RegisterJDKDerby.registerSampleDatabase(Installer.java:108)
        at org.netbeans.modules.derby.Installer$RegisterJDKDerby.run(Installer.java:87)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)