I need some help with Mame32

i have mame32 and also have two usb arcade sticks but for some weird reason i cannot use the two stick simultaneously. They do both work individually though. any help will be greatly appreciated.

use mame 0.119. it lets me use 2 wireless and 2 wired controllers at the same time.

will all of my game files still work with this other mame?

yes just specify the destination where the roms are held