15-08-5 
CoreFoundation	__exceptionPreprocess

1 libobjc.A.dylib objc_exception_throw
2 CoreFoundation __NSFastEnumerationMutationHandler
3 AGVideo -[AVObject saveNewFiles] [AVObject.m line 662]
4 AGVideo _74-[AVObject saveWithBlock:waitUntilDone:eventually:verifyBeforeSave:error:]block_invoke279 [AVObject.m line 758]
5 libdispatch.dylib dispatchcall_block_and_release
6 libdispatch.dylib dispatchclient_callout
7 libdispatch.dylib dispatchroot_queue_drain
8 libdispatch.dylib dispatchworker_thread3
9 libsystem_pthread.dylib pthreadwqthread
10 libsystem_pthread.dylib start_wqthread