OnTriggerEnter/Exit not working

 function OnTriggerEnter () { 
 soundScript.ControlSound(true, fadeTime);}

 function onTriggerEnter(){
 laps++;}

Those are from two different scripts. The top one works when the car enters it, but the bottom one does not. They both are set up near identically: Both box colliders, both have isTrigger checked, neither has a rigidbody. The thing is, the bottom script just will not trigger at all for enter or exit, yet there seems to be no reason for it. I even moved the game object with this script attached to a different area to make sure that it wasn't because it was inside another collider with isTrigger checked, and that didn't work.