Hi,
ok, the problem is solved. there is no problem with the xml-loader but still it was something which was affacted by the xml getting more childs to load. i had a second loader (actually first) which is doing stuff onComplete and everything worked fine as long the xml was loaded before this one. but since the xml got longer it took a while to load and the first loader started to produce some errors. still i dont understand why the XML loader isnt added to the root.loader. i use this code:
LoaderMax.activate([xmlLoader,ImageLoader]);
_ldrQueue = new LoaderMax({name:"mainQueue", requireWithRoot:this.root, autoLoad:true, onProgress:updatePreloader, onComplete:onLoadedBg, onError:ioErrorHandler});
_ldrQueue.append( new SWFLoader("bg_home.swf", {name:"home", estimatedBytes:300000, container:mc_bg_container, autoPlay:true, autoDispose:true}) );
_xmlLdr = new XMLLoader("loadData.xml", {name:"xmlDoc", requireWithRoot:this.root, onComplete:parseXML, onError:ioErrorHandler});
_xmlLdr.load();
thx in advance