Used to work, but now it doesn't – Dash of Color - Black & White, Colorful Photo Editor with Grayscale Effects Review

I used to love this app, but now whenever I try to use it and save a picture, whether to my camera roll or Facebook, it just comes out a black square. I have deleted the app and reloaded it to my phone (4S) and it just does the same thing. I'm really bummed it doesn't work on my phone anymore....
Review by Kmde1 on Dash of Color - Black & White, Colorful Photo Editor with Grayscale Effects.