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MSP430 Programming issue

Other Parts Discussed in Thread: MSP-FET, UNIFLASH, MSP430F2330

I recently bought to programmers 595-MSP-FET from Mouser as extra's for our Test group but I have initialization error when trying to communicate with new units.  The older units work fine when I swap one in and both programmers look identical by the eye and with the Device Manager.  The lights are correct so what could be different?  Could it be a firmware issue?  Is there software I can use from TI to distinguish the difference between the 2 different MSP430 units?