Steps to reproduce. 0. Have an Android 6.0 Phone and install PixelKnot 1.0.2.1 from F-Droid. 1. Open PixelKnot. 2. Allow photo permissions. 3. Select an image. 4. Write your message. 5. Set a message password. 6. You'll get a *"Almost done! We're hiding your message. This will take us a few minutes. We'll notify you when it's ready to send."* Click OK. 7. Unfortunately, PixelKnot has stopped.