[LayaAirIDE 1.0]资源加载，提示不识别路径

//加载3D资源
Laya.loader.create([{url:"LayaScene_Demo/Demo.ls","type":Laya.Scene},
{url:"LayaScene_Scene/Scene.ls","type":Laya.Scene},
{url:"LayaScene_People/People.lh","type":Laya.Sprite3D}],
Laya.Handler.create(this,this.on3DComplete));
报错提示
message：“LoaderManager : unknown file(LayaScene_Demo/Demo.ls) extension with : ls.”