Errore in fase di assegnazione ActionScript

[acer1629]

Salve ragazzi
ho creato il seguente actionscript con il nome sketch.as :

import flash.display.Sprite;
import flash.events.MouseEvent;
import com.adobe.images.JPGEncoder;

stage.addEventListener(MouseEvent.MOUSE_MOVE, moveCursor);
Mouse.hide();

function moveCursor(event:MouseEvent):void
{
    pencil.x = event.stageX;
    pencil.y = event.stageY;
}

	
var canvas_mc:MovieClip = new MovieClip()
addChildAt(canvas_mc, 0);
canvas_mc.swapDepths
function sketch()
{	

canvas_mc.graphics.beginFill(0xFFFFFF);
	canvas_mc.graphics.drawRect(0, 0, 600, 500);
	canvas_mc.graphics.endFill();
	
	canvas_mc.addEventListener(MouseEvent.MOUSE_DOWN, startDrawing);
	canvas_mc.addEventListener(MouseEvent.MOUSE_UP, stopDrawing);
	canvas_mc.addEventListener(MouseEvent.MOUSE_MOVE, makeLine);	
}		
function startDrawing(event:MouseEvent):void{	
	canvas_mc.graphics.lineStyle(1, 0, 1);
	canvas_mc.graphics.moveTo(mouseX, mouseY);
	canvas_mc.addEventListener(MouseEvent.MOUSE_MOVE, makeLine);
}
function stopDrawing(event:MouseEvent):void{
	canvas_mc.removeEventListener(MouseEvent.MOUSE_MOVE, makeLine);
}
function makeLine(event:MouseEvent):void{
	canvas_mc.graphics.lineTo(mouseX, mouseY);
}
sketch();


var serverPath:String = "";
function createJPG(m:MovieClip, q:Number, fileName:String)
{
	var jpgSource:BitmapData = new BitmapData (m.width, m.height);
	jpgSource.draw(m);
	var jpgEncoder:JPGEncoder = new JPGEncoder(q);
	var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);
	
	var header:URLRequestHeader = new URLRequestHeader ("Content-type", "application/octet-stream");
				
	var jpgURLRequest:URLRequest = new URLRequest ( serverPath+"jpg_encoder_download.php?name=" + fileName + ".jpg");		
	jpgURLRequest.requestHeaders.push(header);				
	jpgURLRequest.method = URLRequestMethod.POST;				
	jpgURLRequest.data = jpgStream;
	
	var jpgURLLoader:URLLoader = new URLLoader();	
	//jpgURLLoader.load(jpgURLRequest);		
	navigateToURL(jpgURLRequest, "_blank");
}

save_btn.addEventListener(MouseEvent.CLICK, saveBtnPress);
save_btn.addEventListener(MouseEvent.ROLL_OVER, saveBtnOver);
save_btn.addEventListener(MouseEvent.ROLL_OUT, saveBtnOut);

function saveBtnPress(e:Event):void
{	
	createJPG(canvas_mc, 90, "sketch");
}
function saveBtnOver(e:Event):void
{	
	Mouse.show();
	pencil.visible = false;
}
function saveBtnOut(e:Event):void
{	
	Mouse.hide();
	pencil.visible = true;
}

ho successivamente creato un file .fla nella stessa root del file .as chiamandolo sketch.fla

Quando provo, nella schermata di Adobe Flash CS4 Professional, ad assegnare al .fla nelle proprietà Publish il mio action script compare il seguente messaggio :

A definition for the document class could not be found in the slasspath, so one will be automatically generated in tha SWD file upon export.

Ovviamente, non funziona
Qualcuno sa aiutarmi ?

Grazie mille.

[acer1629]

Ho risolto.

Nella proprietà Document Class avevo scritto "sketch.as" invece di "sketch".