Issue with JTSIMSON core and Simpsons Arcade 2 player

I am able to boot up the 4 player Rom just fine (only play as Marge), but for some reason, I can't get any of the 2 player world sets to load. For example, I used the tool to create the "Simpss2p.rom" for the 2 player to work following the same process. The game goes to a black screen, loads with the white bar and then nothing happens. I am using the files from the JT creator's Patreon, any ideas on how to fix or what might be happening?