我有一个，error exc_bad_access (sigsegv)但我不明白为什么。崩溃日志信息量不大。有人可以帮助我吗？
在我看来，错误发生在应用程序启动并加载AddressBookUI组件以显示联系人列表时。
这是崩溃日志文件的开头：
Incident Identifier: 6C2731B3-027E-4058-8E93-C6471BC30B6C
CrashReporter Key: [TODO]
Hardware Model: iPhone5,2
Process: Rubrica4146 [1532]
Path: /var/mobile/Applications/1ECD07F4-123D-4720-8AB8-53ACDCD71450/Rubrica4146.app/Rubrica4146
Identifier: com.7shapes.rubrica4146
Version: 21
Code Type: ARM
Parent Process: launchd [1]
Date/Time: 2013-02-15 00:01:49 +0000
OS Version: iPhone OS 6.1 (10B143)
Report Version: 104
Exception Type: SIGSEGV
Exception Codes: SEGV_ACCERR at 0x90000008
Crashed Thread: 0
Thread 0 Crashed:
0 libobjc.A.dylib 0x392e95d0 _objc_msgSend + 16
1 CoreFoundation 0x3154773f <redacted> + 271
2 CoreFoundation 0x31547e09 <redacted> + 45
3 UIKit 0x334750ab <redacted> + 51
4 UIKit 0x33474fe3 <redacted> + 91
5 UIKit 0x33474f39 <redacted> + 97
6 UIKit 0x334f905b <redacted> + 2483
7 UIKit 0x33569573 <redacted> + 1719
8 UIKit 0x334b57e1 <redacted> + 913
9 AddressBookUI 0x30dfc19d <redacted> + 241
10 AddressBookUI 0x30dfc08d <redacted> + 65
11 CoreFoundation 0x3154e349 __CFXNotificationPost + 1421
12 Foundation 0x31e65b7f <redacted> + 71
13 UIKit 0x334970df <redacted> + 735
14 UIKit 0x3340d2d1 <redacted> + 2469
15 UIKit 0x3340c7ad <redacted> + 73
16 UIKit 0x3340c1ef <redacted> + 6199
17 GraphicsServices 0x351235f7 <redacted> + 591
18 GraphicsServices 0x35123227 <redacted> + 35
19 CoreFoundation 0x315d23e7 <redacted> + 35
20 CoreFoundation 0x315d238b <redacted> + 139
21 CoreFoundation 0x315d120f <redacted> + 1383
22 CoreFoundation 0x3154423d _CFRunLoopRunSpecific + 357
23 CoreFoundation 0x315440c9 _CFRunLoopRunInMode + 105
24 GraphicsServices 0x3512233b _GSEventRunModal + 75
25 UIKit 0x334602b9 _UIApplicationMain + 1121
26 Rubrica4146 0x0002988b main (main.m:16)
如何理解应用程序崩溃的原因？这个崩溃日志告诉我什么？