AAL558

Hi! I recently bought the Airline Pilot Extreme bundle that came with the Level-D 767 Voice Commander Edition. I have followed the manual to the letter and my flight goes well...until I get to the approach phase of it. After I pass 10,000 is when things for downhill. The FO does everything he's supposed to. When I pass 7000Ft and say "Approach Checklist," he says nothing. The dialogue clearly says that I am saying the correct statement, but he refuses to answer. The rest of the flight does not go well as he will essentially become useless to the rest of the sequence. I know the approach phase is activated because the small little star blinks every 5 seconds. Has anyone experienced this issue? This is my second flight.