you need to add a line in the arcadedef file, all the new ones have it because system 147 was added
if you look in new ones you will see this line "driver": "sys246",
so you need to add this line to yours if you don't use the arcadedefs that come with the emulator
always in this position in the arcadedef
"id": "acedriv3",
"name": "Ace Driver 3: Final Turn",
"driver": "sys246",