App crashing immediately on start up, on device only

Question

I\'m trying to figure out why an app I\'m developing has started crashing immediately when running it on my device (an iPhone 4 running iOS 6.1). I have been working on this

Answer 1

As it turns out there was a problem with my device. I reset my device and the crash disappeared. In future I'll be sure to remember to try resetting my device when I run into this crash.