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SmartRF Flash Programmer 2 crashes during Firmware Update - Launchpad

Other Parts Discussed in Thread: CC2650

Scenario:

- Use an "out of the box" CC2650 Launchpad to do some Contiki development.  Download and execute numerous times using SmartRF Programmer 2.  No problems.

- Use same CC2650 Launchpad with CCS6 to do some BLE development.  First time debug CCS reports that a firmware update is required and successfully does so.  Numerous downloads follow - no problem

- Take same Launchpad and go back to Contiki development.  Start SmartRF Programmer 2.  It reports that a firmware update is required. I hit "Yes" and at 50% it locks up the SmartRF Programmer PC app.  Non recoverable.  It is no longer possible to talk to the board.

PC is running Windows 7 64 bit.

I have now killed 2 Launchpads this way.

Any suggestions?