iPhone 4, iOS 7.1.2: Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Triggered by Thread: 2 Last Exception Backtrace: (0x2fee1f7e 0x3a692cca 0x2fee5912 0x2fee41fe 0x2fe33764 0x16978a 0x3276e582 0x3276ded6 0x32768566 0x327046e4 0x3270384c 0x32767ca4 0x34d1cae8 0x34d1c6d2 0x2feaca62 0x2feac9fe 0x2feab1d2 0x2fe15eba 0x2fe15c9e 0x32766ecc 0x32762148 0x17bda6 0x3ab9fab2) Thread 0: 0 libsystem_kernel.dylib 0x3ac5557c 0x3ac42000 + 79228 1 libsystem_c.dylib 0x3abd0a7c 0x3abbd000 + 80508 2 libsystem_c.dylib 0x3abebede 0x3abbd000 + 192222 3 libsystem_c.dylib 0x3ac05fe0 0x3abbd000 + 298976 4 MerckManualsProfessional 0x002e489c 0xdc000 + 2132124 5 CoreFoundation 0x2fee2284 0x2fe0e000 + 868996 6 libobjc.A.dylib 0x3a692f50 0x3a68f000 + 16208 7 libc++abi.dylib 0x39f4b1c4 0x39f34000 + 94660 8 libc++abi.dylib 0x39f4ad28 0x39f34000 + 93480 9 libobjc.A.dylib 0x3a692e12 0x3a68f000 + 15890 10 CoreFoundation 0x2fe15f30 0x2fe0e000 + 32560 11 CoreFoundation 0x2fe15c9e 0x2fe0e000 + 31902 12 UIKit 0x32766ecc 0x326f4000 + 470732 13 UIKit 0x32762148 0x326f4000 + 450888 14 MerckManualsProfessional 0x0017bda6 0xdc000 + 654758 15 libdyld.dylib 0x3ab9fab4 0x3ab9e000 + 6836 Thread 1: 0 libsystem_kernel.dylib 0x3ac42808 0x3ac42000 + 2056 1 libdispatch.dylib 0x3ab8ede8 0x3ab79000 + 89576 2 libdispatch.dylib 0x3ab7df6e 0x3ab79000 + 20334 Thread 2 Crashed: 0 libsystem_kernel.dylib 0x3ac55c70 0x3ac42000 + 81008 1 libsystem_pthread.dylib 0x3acbcbda 0x3acbc000 + 3034 2 libsystem_pthread.dylib 0x3acbca94 0x3acbc000 + 2708