objectForKeyedSubscript: crash on iOS 5.1

Question

I\'m running some code that does a [NSDictionary objectForKeyedSubscript:] and it\'s crashing on iOS 5, but not iOS 6. I am using xcode 4.5.2 and compiling against the iOS

Answer 1

NSDictionary reference for IOS in Apple developer

Available in iOS 6.0 and later.