Build and Run is breaking my triggers!

enter code hereThe title sums up my problem. I have a game that seems to run fine when I try to play it through the play button at the top of the screen. All of my scripts run just fine and no errors come up. Unfortunately, now that the game is done and we're ready to put it in the quarterly art show, we've run into a snag.

When we hit build and run, some of the triggers break.

The first simply triggers an animation on a swinging wrecking ball. I know the animation works, because another script that triggers it when I left click (for testing purposes) can sometimes trigger it. Then again some times I build the project it can't. I havn't changed anything, but the results sometimes differ!

 function Update () {
 }
 
 function OnTriggerEnter (other : Collider) {
 var swing : GameObject = GameObject.Find("Wreck");
 swing.animation.Play("wreck_swing");
 }

The second is similar. Its a trigger over a portion of walkway that drops out from under the player. Again, It can be triggered with click commands, but the trigger seems to fail entirely.

 function Update () {
 }
 
 function OnTriggerEnter (other : Collider) {
 var walkway : GameObject = GameObject.Find("Walkway");
 walkway.animation.Play("drop");
 
 }

I almost hope I'm doing something wrong. At least that way I can fix it and never have to deal with this again.

Thanks for your help in advance!