Not able to download textures from server...

Hello to all,

I am making an application for WebPlayer , inwhich i am trying to download around 100 textures. I have tried to download textures from my server using webservice, which is in xml format. Sometimes some textures are not downloaded, i can't understand about that problem. I have used following code to download textures ,

 IEnumerator Start()
 {
             string url_Texture = “myurl”;
             StartCoroutine (setTexture (url_Texture, temp_Product));
             
 }
 IEnumerator setTexture (string url, Products productTexture)
         {
                 WWW www = new WWW (url);
                 yield return www;
                 productTexture.p_texture = www.texture;
                 print ("MY Texture:" + url);
                 //    obj.renderer.material.mainTexture = www.texture;
         }

Please let me correct...

Thank you...