Nestopia 2 players not working

I have the X-Arcade tankstick, I mapped the controls for player 1 & 2 under Options > Input, and then under Machine > Input > Port 1 > Pad 1, then the same thing for Pad 2.

I was trying to play Legendary Wings, when I tried to press 2 player start button, it didn't work. When I tried to scroll down to 2 players on the game's menu, it wouldn't work. 1 Player mode worked fine.

How do I get it to work?

...lol... Pressing "Select" toggles 1 and 2 player modes.. hehe.