Error #1009 any info welcome

Question

I am getting this error cannot figure it out.
Please help
Thank you
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at SlideshowModel/updateData()
at Model/setCurrentIndex()
at SlideshowModel/dataLoaded()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()
fla code
package
import flash.events.Event;
public class SlideshowModel extends Model
public var images:XMLList;
public var currentImage:XML;
public var currentTitle:String;
public var currentFile:String;
public function SlideshowModel()
override protected function updateData():void
currentImage = images[currentIndex];
totalItems = images.length();
currentTitle =currentImage.title;
currentFile = currentImage.file;
override protected function dataLoaded(event:Event):void
data = new XML(loader.data);
images = data.image;
setCurrentIndex(currentIndex);

Answer 1

The 1009 error indicates that one of the objects being targeted by your code is out of scope.  This could mean that the object....
- is not in the display list
- doesn't have an instance name (or the instance name is mispelled)
- does not exist in the frame where that code is trying to talk to it
- is animated into place but is not assigned instance names in every keyframe for it
- is one of two or more consecutive keyframes of the same objects with different names assigned.
If you go into your Publish Settings Flash section and select the option to Permit debugging, your error message should have a line number following the frame number which will help you isolate which object is involved.