dyld_fatal_error trap on iPad 2 iOS 7.0.6

[sammio2]

So my App has been working perfectly with CocoaLumberjack, and seemingly out of nowhere the following crash keeps occurring:

Jun 11 15:32:41 iPad kernel[0] : launchd[217] Container: /private/var/mobile/Applications/8326E0DB-F6D9-4B63-8853-1FB3B9337F79 (sandbox)
Jun 11 15:32:41 iPad Test Harness[217] : dyld: lazy symbol binding failed: Symbol not found: _OSAtomicIncrement32
Referenced from: /var/mobile/Applications/8326E0DB-F6D9-4B63-8853-1FB3B9337F79/Test Harness.app/Test Harness
Expected in: /usr/lib/libSystem.B.dylib
Jun 11 15:32:41 iPad Test Harness[217] : dyld: Symbol not found: _OSAtomicIncrement32
Referenced from: /var/mobile/Applications/8326E0DB-F6D9-4B63-8853-1FB3B9337F79/Test Harness.app/Test Harness
Expected in: /usr/lib/libSystem.B.dylib
Jun 11 15:32:41 iPad ReportCrash[218] : ReportCrash acting against PID 217
Jun 11 15:32:41 iPad coresymbolicationd[219] : cache does not exist at /private/var/root/Library/Caches/com.apple.coresymbolicationd/11B651, resetting
Jun 11 15:32:42 iPad ReportCrash[218] : Formulating crash report for process Test Harness[217]
Jun 11 15:32:42 iPad com.apple.launchd1 : (UIKitApplication:com.bsgwireless.lcc.testharness[0x2c2f]) Job appears to have crashed: Trace/BPT trap: 5

I haven't changed anything to do with this code in my App, and this is only occuring on one device, the iPad 2.

Any ideas?

[sammio2]

Closed as 'Developer being a prat'...

One of my sub-projects had a deployment target of 7.1 so was building against the 7.1 SDK instead of the 7.0 SDK. Fixing this to build against 7.0 has fixed the issue (sort of related to ReactiveCocoa/ReactiveCocoa#1223)