Problemi con Import tween e easing

[Stan]

//import mx.transitions.Tween;
//import mx.transitions.easing.*;


//--- Menu
var ArrayMenuI:Array = new Array("Azienda", "Concept", "Donne d'Ambra", "Collezione")
var ArrayMenuE:Array = new Array("Company", "Concept", "Women of Ambra", "Collection")
	
// Crea il Menu, funzione lanciata da Lancia()
function CreaMenu(arr_bottoni:Array){	

	//import mx.transitions.Tween;
	//import mx.transitions.easing.*;

	_root.createEmptyMovieClip("clipMenu",100);
	for (var i=0;i<arr_bottoni.length;i++){		
		var mc:MovieClip=_root.clipMenu.attachMovie("bottone", "bt"+i,i);
		mc.onRollOver=function(){
		}
		mc.onRollOut=mc.onDragOut=function(){	
		}
	}
	clipMenu.ct=0
	clipMenu.i=0
	clipMenu.onEnterFrame=function(){
		
		if (this.ct++%3==0){
			trace(this["bt"+this.i])
				var anim5:Tween = new Tween(this["bt"+this.i], "_alpha", Elastic.easeOut, 0, 100, 1, true);
				trace(anim5)
				anim5.onMotionFinished=function(){
				}
			this.i++			
		}
		this.ct++
		if (this.i==arr_bottoni.length){
			delete this.onEnterFrame
		}
	}
}


function Lancia(lin){	

        //import mx.transitions.Tween;
	//import mx.transitions.easing.*;

	var anim:Tween = new Tween(ClipLogo.lingue, "_alpha", None.easeOut, 100, 0, 15, false)
	anim.onMotionFinished=function(){
		var anim:Tween = new Tween(ClipLogo, "_x", Regular.easeOut, ClipLogo._x,560,10,false)
		var anim2:Tween = new Tween(ClipLogo, "_y", Regular.easeOut, ClipLogo._y,330,10,false)		
			anim2.onMotionFinished=function(){
				var anim=Tween = new Tween(ClipLogo.linea, "_yscale", Elastic.easeOut, ClipLogo.linea._yscale, 100, 30, false)
				anim.onMotionFinished=function(){	
					CreaMenu(eval("ArrayMenu"+lin))	
				}
				//
			}
		}
}

Allora ho levato tutto il codice sui clip per renderlo più semplice. Qual'è il problema?

Che se Import lo metto al primo frame le tween in lancia funzionano, ma quelle in CreaMenu no.
Se lo metto in Lancia, lì funzionano e in CreaMenu no.
Se lo metto in Lancia e CreaMenu l'errore è "cannot be imported because its leaf name is already being resolved to imported class".

Per far funzionare l'animaizone in CreaMenu bisogna che la lancio diretta, e non lanciata da

anim.onMotionFinished=function(){
CreaMenu(eval("ArrayMenu"+lin))
}