      */
     override public function swapChildrenAt(index1:int, index2:int):void
     {
-        throw(new Error("swapChildrenAt is not available in FxComponent. " + 
-                "Instead, modify the skin directly or use swapItemsAt."));
+        throw(new Error(resourceManager.getString("components", "swapChildrenAtError")));
     }
     
     //--------------------------------------------------------------------------

                if (part.required)
                {
                    if (!(part.id in skin) || skin[part.id] == null)
                        throw(new Error("Required skin part \"" + part.id + "\" cannot be found.")); 
                }
                
                if (part.id in skin)

     */
    override public function removeChildAt(index:int):DisplayObject
    {
        throw(new Error(resourceManager.getString("components", "removeChildAtError")));
    }
    
    /**
