Мобильный SDK Amazon AWS для Android и его утилита загрузки S3 не сообщают об ошибках. Есть идеи, почему?

Вот курс прямо сейчас:

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Забыл упомянуть, но тестируется версия Android Lollipop 5.1.

public class AmazonS3Helper
{
    Context context;

    public String bucket;
    public String key;

    public File file;

    public AmazonS3 s3;
    public TransferUtility utility;

    public AmazonS3Helper(JSONObject p, Context c)
    {
        Log.i("tag", "new AmazonS3Helper object");

        this.context = c;

        try
        {
            bucket    = p.getString("bucket");
            key        = p.getString("key");


            this.file = new File(
                c.getExternalFilesDir(null),
                "nn_temp_photo.jpg");

            credentialsProvider();
            setTransferUtility();

            upload();
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in new AmazonS3Helper object: " + x.getMessage());
        }
    }

    public void credentialsProvider()
    {
        Log.i("tag", "Providing credentials");

        try
        {
            CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
                this.context,
                // This has been verified to return the correct identity pool
                MyApplicationClass.getPreference("aws.credentials"),
                Regions.US_EAST_1);

            setAmazonS3Client(credentialsProvider);
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in providing credentials: " + x.getMessage());
        }
    }

    public void setAmazonS3Client(CognitoCachingCredentialsProvider credentialsProvider)
    {
        Log.i("tag", "Setting amazon s3 client");

        try
        {
            s3 = new AmazonS3Client(credentialsProvider);
            s3.setRegion(Region.getRegion(Regions.US_EAST_1));
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in setting amazon s3 client:" + x.getMessage());
        }
    }

    public void setTransferUtility()
    {
        Log.i("tag", "Setting transfer utility");

        try
        {
            utility =
                new TransferUtility(
                    s3,
                    this.context);
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in setting transfer utility: " + x.getMessage());
        }
    }

    public void upload()
    {
        Log.i("tag", "uploading");

        try
        {
            TransferObserver transferObserver = utility.upload(
                bucket,
                key,
                file
            );

            transferObserverListener(transferObserver);
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in uploading: " + x.getMessage());
        }
    }

    public void transferObserverListener(TransferObserver transferObserver)
    {
        Log.i("tag", "transferObserverListener");

        try
        {
            transferObserver.setTransferListener(new TransferListener()
            {
                @Override
                public void onStateChanged(int id, TransferState state)
                {
                    Log.i("tag", state + "");
                }

                @Override
                public void onProgressChanged(int id, long bytesCurrent, long bytesTotal)
                {
                    int percentage = (int) (bytesCurrent / bytesTotal * 100);
                    Log.i("tag", percentage + "");
                }

                @Override
                public void onError(int id, Exception ex)
                {
                    Log.i("tag", "error");
                }
            });
        }
        catch (Exception x)
        {
            Log.i("tag", "Error in transferObserverListener: " + x.getMessage());
        }
    }
}

Это ошибка версии 2.2.15. О некоторых исключениях ввода-вывода не сообщается. Это исправлено в 2.2.16. Не могли бы вы попробовать последнюю версию?