Created attachment 87685 [details]
stacktrace

Steps to reproduce:

- Copy the code to the editor:
-------------------------------------------------------

import javafx.util.Math;


public class MyModel extends Model{


    public var engines:EngineModel[];

    public var defaultPropellent:Number = 1.0;


    public function acceleration()


    public function acceleration(propellent:Number){

        //println("[spacecrfat model] acceleration: {propelent}");


        if(propellent != 0){
            var sign = Math.signum(propellent);
            out("sign: {sign}");

            var d = if(sign < 0) Math.PI else 0;
            var p = Math.abs(propellent);


            for(engine in engines){
                engine.direction = d;
                engine.propelent = p;
            }
        }


    }

    public function deacceleration(propellent:Number){
    }

    public function turn(direction:Number, propellent:Number){
    }

}
-------------------------------------------------------

The exception pops up.

changing milestone

fixed in http://hg.netbeans.org/javafx/rev/d9ef82934f3c

verified in netbeans-trunk-nightly-200909221401-javafx-full.zip