James GVB

Results 3 issues of James GVB

![screen shot 2017-01-19 at 2 36 02 pm](https://cloud.githubusercontent.com/assets/3453556/22122125/b3436bd2-de54-11e6-8d3e-9d7933117801.png) What's going on in the lib? Latest swift 3 branch

Any ideas as to what is causing this crash. I'm not sure the image type at the time of crash. It could be an APNG, gif, or jpeg. Crash is...