Dragon Warrior VII Problems- Xbutton Causes Freeze

Hey, I've been playing DW VII for a long time on epsxe, and recently I discover that every time I press the x button, the game (not epsxe itself) freezes. I've tried remapping my controls, but no matter what I try the X button freezes the game! It used to work perfectly, and I love this game (it doesn't happen to other games). Please help!