Does anyone have a Harmony flash cart for the Atari 2600? I have the standard one (not the Encore; I screwed up ordering and figure I won't worry about it until I find a game that I really want to play but can't), but I've had an odd issue with it and am still waiting for batari to message me back on AtariAge. The cart works perfectly with my 2600, but it won't work on my 7800. Both 7800 carts and retail 2600 carts play no problem on the 7800, but for some reason, the Harmony cart won't. I've tried updating the cartridge's firmware, but that didn't seem to help.
Any thoughts or ideas?