Problems get OBB File form GooglePlay Store

Hello everybody!

I´ve working for two Days on this Problem know, and dont get even closer. So I´m really appriciate if somebody could give me a hint. Thanks in advance!

In a nutshell: I have an apk thats bigger than 50MB I want to use OBB file + assetBundle to adress this problem. AssetBundle Loading is working if I copy the odd file with the right name in the right Folder. But if I try to get the OBB file from GooglePlay, I see: Download -> Download finished, but I still dont get any data, and I´ve no idea why.

Whole Project can be found here: https://github.com/FriedrichWessel/TestOBB

 Important Code: 
 
     using UnityEngine;
     using System.Collections;
     using System.Collections.Generic; 
     
     public class AssetStorage : MonoBehaviour {
         
         
         public static AssetStorage Instance{
             get; 
             set; 
         }
         
         //public string[] PrefabNames; 
         public string prefab = "Penguin"; 
         public string AssetBundleName; 
         public string message = "NONE"; 
         //private Dictionary<string, AssetBundleRequest> requests = new Dictionary<string, AssetBundleRequest>(); 
         private AssetBundleRequest request; 
         
         private string mainPath; 
         private string expPath; 
         private WWW www;
         
         void Awake() {
             DontDestroyOnLoad(gameObject);
             
             if(Instance == null)
                 Instance = this; 
             
         }
         
         void OnDestroy(){
             //Instance = null; 
             Debug.LogError("Destroy");
         }
         
         
         
         // Use this for initialization
         void Start () {
             if(GooglePlayDownloader.RunningOnAndroid()){
                 expPath = GooglePlayDownloader.GetExpansionFilePath();
                 message = expPath; 
                 mainPath = string.Empty; 
                 if (expPath == null){
                     message = "External storage is not available!";
                     Debug.Log("External storage is not available!");
                 } else {
                     message = "Try get MainPath" ; 
                     Debug.Log(message);
                     mainPath = GooglePlayDownloader.GetMainOBBPath(expPath);
                     Debug.Log("Main Path after first Fetch: " + mainPath);
                     message = "MainPath: " + mainPath; 
                 }
                 
                 if(mainPath == null){
                     message = "OBB not available - download!"; 
                     Debug.Log(message); 
                     GooglePlayDownloader.FetchOBB();
                     mainPath = GooglePlayDownloader.GetMainOBBPath(expPath);
                     message = "OBB Fetch finished" + mainPath; 
                     Debug.Log(message); 
                 }
             
             }
             StartCoroutine(Load());     
             
         }
         
         IEnumerator Load(){
             
             string filePath = string.Empty; 
             if(GooglePlayDownloader.RunningOnAndroid()){    
                 bool testResourceLoaded = false;
                 int count = 0; 
                 while(!testResourceLoaded) {     
                     
                     mainPath = GooglePlayDownloader.GetMainOBBPath(expPath);
                     
                     //Debug.Log("Main Path after Fetch: " + mainPath);
                     if(mainPath != null){
                         testResourceLoaded = true; 
                         //Debug.Log("Found Main Path: " + mainPath);
                         break; 
                     }
                     count++; 
                     if(count > 60)
                         break; 
                     yield return new WaitForSeconds(0.5f); //Let's not constantly check, but give a buffer time to the loading
     
         
                 }
                 
                 if(!testResourceLoaded){
                     message = "Connectionion Timeout"; 
                     Debug.Log(message); 
                 }
                     
                 else{
                     
                     message =  "Loading Finished";
                     Debug.Log(message); 
                 }
     
         
                 if(mainPath == null){
                     message = "MainFile still not found!"; 
                     Debug.Log(message); 
                     
                 }
             
                 filePath = "jar:file://" + mainPath;
                 filePath += "!/"+AssetBundleName+".unity3d";
                 
                 
             
             } else {
                 filePath = "file://" + Application.dataPath; 
                 filePath += "/"+AssetBundleName+".unity3d"; 
                 
             }
                 
             
             
             message = "FilePath: " + filePath; 
             Debug.Log(message); 
             
             
             www = WWW.LoadFromCacheOrDownload(filePath,0); 
             yield return www;
             var bundle = www.assetBundle; 
             if(bundle == null)
                 Debug.Log("bundle == 0"); 
             
             Instantiate(bundle.Load(prefab, typeof(GameObject))); 
     
         }
         
         public string InstancePrefab(string name){
             /*if(requests.ContainsKey(name)){
                 Instantiate(requests[name].asset); 
                 return ("Finished loading: " + name); 
             } else 
                 return ("Asset not found: " + name); */
             //Instantiate(request.asset); 
             
             return ("Instance Finished: " + name ) ; 
         }
         
         void OnGUI(){
             GUI.Label(new Rect(10, 10, Screen.width-10, 20), message);
         }
         
         
         
     }
     

Thanks again !

Friedrich

P.S.: I get all the information from these links here:

Android Expansion Files: http://developer.android.com/guide/google/play/expansion-files.html#Testing

Usage of the OBB Plugin http://forum.unity3d.com/threads/150095-Split-APK-amp-Google-Play-OBB-Downloader-Question

Add License to the Google Play Account: http://developer.android.com/guide/google/play/licensing/index.html