Issue building a distribution build for test flight or app store

[murrayk]

Undefined symbols for architecture arm64

[murrayk]

http://stackoverflow.com/questions/19213782/undefined-symbols-for-architecture-arm64

You can fix the linker error by going to project -> target (your project name) -> build settings and change architectures to standard architectures (armv7, armv7s), and valid architectures to armv7, armv7s.