As a retired electronics man (but total newbie with PC + dev. boards) I hope this isn't too much of a stupid question. I have bought the above board. It works great on a Win 8.1 PC, but not on the Win 7 Pro PC - which is a shame because that's the one in my hobby lab! Win 7 finds the USB device and the Demo Screen correctly identifies the chip in use, etc. But hitting any of the 'lit' buttons just generates an Exception Handler window and I can go no further than that. I don't know what Ex Handler means so am at a loss! Wisdom greatfully accepted. Tks. John
