Can't see much difference save that your setup is using a 5v/12v supply. Mine's very similar but I am using the USB plug for power. Even with an iPad adapter (more than 1A) it refuses to work.
I see you are supplying 12v and 5v to the card adapter, could that be it? I thought it only needed the 5v supply. I just tried with a PC power supply but it is still not working.
Don't forget, I am still getting 80 on the register check.
12v goes nowhere on the board. I was just too lazy to remove the wire.
Matt