我的应用程序有一个奇怪的问题，有时候，非常罕见，当在iPhone4上运行时，它在开始时崩溃，我得到了崩溃日志，但我真的无法做任何事情。我有点卡住，我应该在哪里看？这是日志：
0 libsystem_kernel.dylib 0x34c96a1c __pthread_kill + 8
1 libsystem_c.dylib 0x328ee3b4 pthread_kill + 52
2 libsystem_c.dylib 0x328e6bf8 abort + 72
3 libsystem_c.dylib 0x329146d4 __assert_rtn + 140
4 My App 0x0000fb8c 0x1000 + 60300
5 My App 0x0000fec4 0x1000 + 61124
6 My App 0x00009ffc 0x1000 + 36860
7 CoreFoundation 0x359c979c __invoking___ + 60
8 CoreFoundation 0x35941436 -[NSInvocation invoke] + 102
9 My App 0x0005f408 0x1000 + 386056
10 My App 0x0005c9b8 0x1000 + 375224
11 CoreFoundation 0x3593656a -[NSObject(NSObject) performSelector:withObject:withObject:] + 18
12 My App 0x000b60d4 0x1000 + 741588
13 My App 0x000b6bc0 0x1000 + 744384
14 My App 0x000b8c9c 0x1000 + 752796
15 UIKit 0x35584bee -[UIWindow _sendTouchesForEvent:] + 362
16 UIKit 0x35584568 -[UIWindow sendEvent:] + 256
17 UIKit 0x3556d30c -[UIApplication sendEvent:] + 292
18 UIKit 0x3556cc4c _UIApplicationHandleEvent + 5084
19 GraphicsServices 0x35350e70 PurpleEventCallback + 660
20 CoreFoundation 0x3599da90 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 20
21 CoreFoundation 0x3599f838 __CFRunLoopDoSource1 + 160
22 CoreFoundation 0x359a0606 __CFRunLoopRun + 514
23 CoreFoundation 0x35930ebc CFRunLoopRunSpecific + 224
24 CoreFoundation 0x35930dc4 CFRunLoopRunInMode + 52
25 GraphicsServices 0x35350418 GSEventRunModal + 108
26 GraphicsServices 0x353504c4 GSEventRun + 56
27 UIKit 0x35597d62 -[UIApplication _run] + 398
28 UIKit 0x35595800 UIApplicationMain + 664
29 My App 0x00002118 0x1000 + 4376
30 My App 0x00002084 0x1000 + 4228
我无法找到崩溃的任何模式，它只是在30-40个应用程序初创公司中发生过一次。是什么打败了我，除了我不知道如何解释崩溃日志这一事实，为什么这种情况发生得如此罕见，没有明显的原因？