If the drivers were installed incorrectly or incompletely then FlashScan will not be able to tell Windows to allow the port to draw 500mA and it will not power up correctly.
Try using the FTCLean utility to clean out any FlashScan drivers. FTClean only works on Win2000 and WinXP, it doe snot work on Vista. If you are usaing Vista let me know and I'll explain how to remove badly installed drivers from Vista.
FTClean is available in your EFILive install here: \Program Files\EFILive\Drivers\Utiltities\FTClean
Use the Product ID (PID) value E4A1 to clear ONLY FlashScan V2 drivers.
Once uninstalled, try reconnecting FlashScan.
Regards
Paul