我的应用程序在（ipad 6.1模拟器、ipad 6.0模拟器和ipad 5.1模拟器）中运行良好。但在我的ipad上安装后，它就不再工作了。
我使用Organizer Dervices来调试错误，并获得错误消息：
控制台：7月31日21:55:27 Sandy ReportCrash[937]：为流程BenefitPad制定崩溃报告[781]Jul 31 21:55:27 Sandy ReportCrash[937]：libMobileGestalt copySystemVersionDictionaryValue:无法从系统版本字典中查找ReleaseType
Dervice Logs:
Incident Identifier: F6306353-BEF8-4626-8FA1-17F8C829AEE4
CrashReporter Key: 1a786173c1c72ae5d44172b3d641feee8e91a4af
Hardware Model: iPad3,3
Process: BenefitPad [778]
Path: /var/mobile/Applications/D733430C-510D-4D2A-9D88-6361A6074485/BenefitPad.app/BenefitPad
Identifier: BenefitPad
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-07-31 19:46:51.989 +0800
OS Version: iOS 6.1.3 (10B329)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x75417466
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x3935c52c objc_retain + 12
1 BenefitPad 0x001571fe 0xe8000 + 455166
2 CoreFoundation 0x3140c034 _CFXNotificationPost + 1424
3 Foundation 0x31d22594 -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
4 Foundation 0x31d26056 -[NSNotificationCenter postNotificationName:object:] + 26
5 BenefitPad 0x0010cc12 0xe8000 + 150546
6 BenefitPad 0x000fe2da 0xe8000 + 90842
7 BenefitPad 0x00134cd8 0xe8000 + 314584
8 BenefitPad 0x00135d02 0xe8000 + 318722
9 libdispatch.dylib 0x3977711c _dispatch_call_block_and_release + 8
10 libdispatch.dylib 0x397764b4 _dispatch_client_callout + 20
11 libdispatch.dylib 0x3977b1b8 _dispatch_main_queue_callback_4CF$VARIANT$mp + 220
12 CoreFoundation 0x3148ef36 __CFRunLoopRun + 1286
13 CoreFoundation 0x31401eb8 CFRunLoopRunSpecific + 352
14 CoreFoundation 0x31401d44 CFRunLoopRunInMode + 100
15 GraphicsServices 0x34fb62e6 GSEventRunModal + 70
16 UIKit 0x333172fc UIApplicationMain + 1116
17 BenefitPad 0x000fd92c 0xe8000 + 88364
18 BenefitPad 0x000e9aec 0xe8000 + 6892
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x3984d648 kevent64 + 24
1 libdispatch.dylib 0x3977d974 _dispatch_mgr_invoke + 792
2 libdispatch.dylib 0x3977d654 _dispatch_mgr_thread$VARIANT$mp + 32
Thread 2 name: WebThread
Thread 2:
0 libsystem_kernel.dylib 0x3984ceb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3984d048 mach_msg + 36
2 CoreFoundation 0x31490040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x3148ed9e __CFRunLoopRun + 878
4 CoreFoundation 0x31401eb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x31401d44 CFRunLoopRunInMode + 100
6 WebCore 0x373f1500 _ZL12RunWebThreadPv + 440
7 libsystem_c.dylib 0x397b630e _pthread_start + 306
8 libsystem_c.dylib 0x397b61d4 thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x3985dd98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x397abcf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x397aba12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x397ab8a0 start_wqthread + 4
Thread 4:
0 libsystem_kernel.dylib 0x3985dd98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x397abcf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x397aba12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x397ab8a0 start_wqthread + 4
错误可能发生在方法中（文件：AFHTTPClient.m行：309）：
static void AFNetworkReachabilityCallback（SCNetworkReachailityRef__未使用的目标，SCNetworkReachabilityFlags标志，void*info）{AFNetworkReachabilityStatus status=AFNetworkReazabilityStatusForFlags（标志）；AFNetworkReachabilityStatusBlock块=（__bridge AFNetworkreachabilityStatus块）信息；if（块）{块（状态）；}dispatch_async（dispatch_get_main_queue（）^{NSNotificationCenter*notificationCenter=[NSNotificationCenter defaultCenter]；[notificationCenter postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:[NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:status]forKey:AFNetworkingReachailityNotificationStatusItem]]；})；}谢谢你的帮助。
我已经解决了这个问题。
原因是作为"NSDecimalNumber"的属性，在我将属性从"NSDecialNumber"更改为"NSString"后，它运行良好。
这个问题与"AFNetworking"无关。