It may be a faulty flash chip on FlashScan. If the firmware programmed into and stored on the flash chip is corrupted (due to a faulty flash chip) then the device will stay in dead-poll after it has been programmed. You may need to return it for repair.

If you're in the US you can send it to SoCal Diesel who handle warranty and repair work for FlashScan and AutoCal.
http://www.efilive.com/distributors

Regards
Paul