TypeError: Error #2007

[arturp59892375]

Here's my error

TypeError: Error #2007: Parameter child must be non-null.

    at flash.display::DisplayObjectContainer/addChildAt()

    at fl.controls::BaseButton/drawBackground()

    at fl.controls::BaseButton/draw()

    at fl.core::UIComponent/callLaterDispatcher()

here's my AS

import fl.events.SliderEvent;

import flash.geom.ColorTransform;

import flash.events.Event;

s_red.addEventListener(SliderEvent.THUMB_DRAG,changeColor)

s_green.addEventListener(SliderEvent.THUMB_DRAG,changeColor)

s_blue.addEventListener(SliderEvent.THUMB_DRAG,changeColor)

function changeColor(Event:SliderEvent):void{

    var r= s_red.value;//0- 255

    var red = r.toString(16);//number to hexcode conversion with radix set to 16

    if(red.length<2){red ="o"+red}//if its a single digit number make it double by prefixing ''o''

    var g= s_green.value;//0- 255

    var green = g.toString(16);

    if(green.length<2){green ="o"+green}//if its a single digit number make it double by prefixing ''o''

    var b= s_blue.value;//0- 255

    var blue = b.toString(16);

    if(blue.length<2){blue ="o"+blue}//if its a single digit number make it double by prefixing ''o''

    var myColor:ColorTransform =new ColorTransform();

    myColor.color = uint("ox"+red+green+blue);

    mc.transform.colorTransform = myColor;

    rgb.text = red+green+blue;

}

    myColorfield.addEventListener(Event.CHANGE,changeColor1)

function changeColor1(event:Event):void{

    var myColor1:ColorTransform = new ColorTransform();

    myColor1.color = uint("ox"+myColorfield.text);

    if(myColorfield.length==6){mc.transform.colorTransform = myColor1}

}

Help please

[kglad]

click file>publish settings>swf>and tick 'permit debugging'.  retest.

the problematic line number where you're trying to add something that doesn't exist (when your code executes) will be in the error message.  if you still can't fix it after seeing that, copy and paste the problematic line of code.

[arturp59892375]

thank you for replying!

still i get :

TypeError: Error #2007: Parameter child must be non-null.

    at flash.display::DisplayObjectContainer/addChildAt()

    at fl.controls::BaseButton/drawBackground()

    at fl.controls::BaseButton/draw()

    at fl.core::UIComponent/callLaterDispatcher()

that error is appears in output, i dont know why it doesnt work.

the problem is that the drag things are making their work and the rgb text box is working but my (mc) doesnt work and its not changing color when i drag.

[kglad]

again, click file>publish settings>swf>and tick 'permit debugging'.  retest.

[arturp59892375]

still nothing my (mc) is not working.  

[kglad]

after performing those steps your error message will pinpoint the problem (which is not in the code you showed).