[flexcoders] asigning text with script error

[David Pariente]

Hi all,

I got an strange error...

I make some text change through AS3 on my app.
When i test on IE, i see no change at all.
When i test on FireFox, i see the changes. But if i reload the page i 
get this error on the browser:

TypeError: Error #1009: Cannot access a property or method of a null 
object reference.
    at 
thethaichef/rLoaded()[K:\PROJECTS\Personal\thethaichef\src\thethaichef.mxml:75]
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at flash.net::URLLoader/onComplete()

seems it finds an error on the rLoaded function (that starts when an XML 
is loaded), when i asign some text to the MXML:

private function rLoaded(event:Event) : void{
                        var rXML:XML = new XML();   
                        rXML = XML(event.target.data);
                       
                        currentState="recipe";

                        rdata_title.title=rXML.info.thainame;
                       
                        rdata_by.text='by '+rXML.info.author.name;
                       
                 
                    }

does anyone knows what i'm doing wrong?
thnx a lot!