First thing about this dumper, it runs off the slot1 cart and you have to patch it for your slot2.  The older dumper ran off the slot2.

Second, I cold never get this to work....I get to the point where it wants you to put in the cart to be dumped.  I put in the cart to be dumped and it shows a number.....then that's it.   It just sits there.   How do you get it to actually dump the cart?