So I'm still not sure why I am getting the following error: Caller Input Exception: Caller does not have a FPS Caller Account. I've added my AWS keys to my app, and have read through the Amazon FPS guides. 

I'd like to get the amazon payments working, I'm using [Self-Starter](https://github.com/lockitron/selfstarter) as the foundation of my app.

Any help would be greatly appreciated.