I use the MC that came with it the AR as well. Does the AR program open up or does your computer give you a message saying that it doesnt recognize what's being plugged into the USB port?
I have had your problem and the problem where I open the AR program but the memory card doesnt appear on the left and that green ball at the top of the screen doesnt light up.
Either way, remove the AR from your USB port. Remove the MC from that cord attachment. I usually just blow (just like those old NES carts) in the MC and both sides of the attachment as well as the USB port on my laptop.
Then plug the MC back into the cord attachment and then plug it back into the USB port. It should now work.
You could also use a can of compressed air to clean out everything instead of blowing into it. But dont spray a lot as the compressed air can actually freeze stuff.