I've check all and there are no null obj... but I think I found the problem
this are in the same function
TweenMax.to(splat1, 0.3, {alpha:0, visible:0});
TweenMax.to(cap_bun12, speed1 + 0.1, {y:220.80, delay: speed1 + 0.2, onComplete: goto1});
and I have to set a delay for cap_bun12 to complete after splat1 if cap_bun12 completes will goto1 and goto1 is a function that change the keyframe so the tween for splash1 can be done....
till now is good... will see tomorrow