WriteableBitmapExtension crashes app on device - windows-phone-8.1

Question

I have added a WriteableBitmapExtension via NuGet to my Windows Phone 8.1 WinRT app. I have functions to capture an image from camera and save it to picture library. I tried rotate captured image before save and I found solution here
WriteableBitmap crashes program with no message?. Everything works fine on emulator but when I run my app on Nokia Lumia 630 it crashes few seconds after taking a photo without debbuger message. Can anyone help me with this issue? Here is my code of taking photo:
public WriteableBitmap Image
{
get
{
return this.image;
}
set
{
this.image = value;
this.RaisePropertyChanged(() => this.Image);
}
}
private async void TakePhoto()
{
using (var stream = new InMemoryRandomAccessStream())
{
var imgEncodingProperties = ImageEncodingProperties.CreateJpeg();
var img = BitmapFactory.New(640, 480);
await this.MediaCapture.CapturePhotoToStreamAsync(imgEncodingProperties, stream);
stream.Seek(0);
img.SetSource(stream);
WriteableBitmapExtensions.DrawLine(img, 10, 10, 300, 300, Colors.Black);
this.Image = img.Rotate(90);
this.TurnOffCaptureMode();
}
}
private void TurnOffCaptureMode()
{
this.MediaCapture.StopPreviewAsync();
this.IsInCaptureMode = false;
}

Answer 1

Alternate solution is here.
1 Open file Picket use build in camera to take picture.
var openPicker = new FileOpenPicker();
openPicker.ContinuationData["Action"] = "SendPicture";
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".png");
openPicker.PickSingleFileAndContinue();
***2. In app.xaml.cs you will get captured image. as below.***
public void Continue(IContinuationActivatedEventArgs args)
{
if(args.Kind == ActivationKind.PickFileContinuation)
{
var openPickerContinuationArgs = args as FileOpenPickerContinuationEventArgs;
// Recover the "Action" info we stored in ContinuationData
string action = (string) openPickerContinuationArgs.ContinuationData["Action"];
if(openPickerContinuationArgs.Files.Count > 0)
{
// TODO: Get the files here
}
else
{
// TODO: Write code here to handle picker cancellation.
}
}
}