Data export(ttbulkcp) Oracle TimesTen Question

I'm trying to export an Oracle TimesTen(TimesTen Release 11.2.1.5.0) with ttbulkcp(Data export), using SQL Developer Version 2.1.1.64
All other functions are normal operation. Also ttbulkcp(Data export) in Oracle Table is normal operation. But , I get the following error in ttbulkcp(Data export) in TimesTen Table.
java.lang.NullPointerException
     at oracle.dbtools.raptor.format.ResultsFormatterWrapper.getColumnCount(ResultsFormatterWrapper.java:67)
     at oracle.dbtools.raptor.format.ResultsFormatter.getColumnCount(ResultsFormatter.java:130)
     at oracle.dbtools.raptor.timesten.format.TimesTenLoaderFormatter.getColumns(TimesTenLoaderFormatter.java:207)
     at oracle.dbtools.raptor.timesten.format.TimesTenLoaderFormatter.printColumnData(TimesTenLoaderFormatter.java:183)
     at oracle.dbtools.raptor.timesten.format.TimesTenLoaderFormatter.start(TimesTenLoaderFormatter.java:73)
     at oracle.dbtools.raptor.format.ResultSetFormatterWrapper.print(ResultSetFormatterWrapper.java:150)
     at oracle.dbtools.raptor.format.ResultsFormatter.print(ResultsFormatter.java:200)
     at oracle.dbtools.raptor.format.ResultsFormatter.doPrint(ResultsFormatter.java:416)
     at oracle.dbtools.raptor.dialogs.actions.TableExportAction$5.doWork(TableExportAction.java:637)
     at oracle.dbtools.raptor.dialogs.actions.TableExportAction$5.doWork(TableExportAction.java:634)
     at oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:492)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:619)
Driver not capable
Thank you.
GooGyum

If you have a DB support contract, I suggest you open a SR on Metalink/MOS, to get official response and follow-up, else you can hope someone from development picks it up here.
Regards,
K.

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