Trying to download & load an xml with Adobe AIR Mobile

Hi,

I have an app (Android & IOS) that contains an XML file (embedded with Adobe Flash in settings) that my app uses for showing data to the user.

I've made a function that compares the xml file embedded in the app with an xml file on my server

var packagedFile:File = File.applicationDirectory.resolvePath( "soleil.xml" );
var destFile_soleilXML:File = File.applicationStorageDirectory.resolvePath( "soleil.xml" );
var url_local_soleil:URLRequest = new URLRequest("soleil.xml");
loader_local.load(url_local_soleil);
var url_online_soleil:URLRequest = new URLRequest("http://mywebsite.com/soleil.xml");
loader_online.load(url_online_soleil);
function loader_local_Complete(e:Event):void{
size_of_horaires_local = URLLoader(e.target).bytesTotal; 
}
function loader_local_soleil_Complete(e:Event):void{
size_of_soleil_local = URLLoader(e.target).bytesTotal; 
}
function check_if_size_different():void{
if(size_of_horaires_local == size_of_horaires_online){
//if same size, copy the actual xml file into a specific folder
packagedFile.copyTo( destFile_soleilXML );
}else{
// copy the xml of my server into a specific folder (will do later)
}

I didn't do the part where the app copy and read the xml file that as been downloaded yet. I've tried, at first, to load the embedded xml file that I moved to a specific folder (see line 21) but when I want to load my xml file to show the data to the user :

var myXML:XML;
var myLoader:URLLoader = new URLLoader();
myLoader.load(new URLRequest(destFile_soleilXML));
myLoader.addEventListener(Event.COMPLETE, processSoleil);
        function processSoleil(e:Event):void {
            myXML = new XML(e.target.data);
    var results:XMLList = myXML.row.(date == mySavedData.data.theDate);
    if(results.length()){
    for each(var row:XML in results){
        //doingstuff
    }
}
        }

I've got an error :

Error #2032: Unhandled ioError:. text=Error #2032: Stream Error. URL: app:/data/user/0/air.nc.cocogeek.mareeNC/nc.cocogeek.mareeNC/Local%20Store/soleil.xml

Any idea why ?