HockeyApp crash report - objective-c

Question

I have an app with HockeyApp integrated for crash reporting.
yesterday i have recieved a crash report stated below.
Incident Identifier: B797B4D3-EA8D-4226-8B0E-11149ADC20B7
CrashReporter Key: 55E9EBD1-9990-44EF-98E8-C0A000955CED
Hardware Model: iPhone5,2
Process: AppName [1375]
Path: /Users/USER/AppName.app/AppName
Identifier: ----------------------------
Version: 1.0.0
Code Type: ARM
Parent Process: launchd [1]
Date/Time: 2013-10-21T18:04:47Z
OS Version: iPhone OS 7.0.2 (11A501)
Report Version: 104
Exception Type: SIGABRT
Exception Codes: #0 at 0x38f341fc
Crashed Thread: 0
Application Specific Information:
*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'
Last Exception Backtrace:
0 CoreFoundation 0x2e689e8b <redacted> + 131
1 libobjc.A.dylib 0x389846c7 _objc_exception_throw + 39
2 CoreFoundation 0x2e5bfe65 <redacted> + 233
3 AppName 0x000ac04d 0x66000 + 286797
4 AppName 0x000abf17 0x66000 + 286487
5 Foundation 0x2f06ee6d ___NSFireTimer + 65
6 CoreFoundation 0x2e654e87 <redacted> + 15
7 CoreFoundation 0x2e654aa3 <redacted> + 795
8 CoreFoundation 0x2e652e2b <redacted> + 1219
9 CoreFoundation 0x2e5bd541 _CFRunLoopRunSpecific + 525
10 CoreFoundation 0x2e5bd323 _CFRunLoopRunInMode + 107
11 GraphicsServices 0x332f42eb _GSEventRunModal + 139
12 UIKit 0x30e741e5 _UIApplicationMain + 1137
13 AppName 0x000b6cd7 0x66000 + 330967
14 libdyld.dylib 0x38e7dab7 <redacted> + 3
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x38f341fc ___pthread_kill + 8
1 libsystem_c.dylib 0x38ee502d _abort + 77
2 AppName 0x000e41ff 0x66000 + 516607
3 CoreFoundation 0x2e68a18d <redacted> + 581
4 libobjc.A.dylib 0x38984927 <redacted> + 175
5 libc++abi.dylib 0x3834a1b3 <redacted> + 79
6 libc++abi.dylib 0x38349d17 ___cxa_rethrow + 103
7 libobjc.A.dylib 0x3898480f _objc_exception_rethrow + 43
8 CoreFoundation 0x2e5bd5b7 _CFRunLoopRunSpecific + 643
9 CoreFoundation 0x2e5bd323 _CFRunLoopRunInMode + 107
10 GraphicsServices 0x332f42eb _GSEventRunModal + 139
11 UIKit 0x30e741e5 _UIApplicationMain + 1137
12 AppName 0x000b6cd7 0x66000 + 330967
Thread 1:
0 libsystem_kernel.dylib 0x38f21838 _kevent64 + 24
1 libdispatch.dylib 0x38e6a643 <redacted> + 39
Thread 2:
0 libsystem_kernel.dylib 0x38f33f38 ___psynch_cvwait + 24
1 libsystem_pthread.dylib 0x38f9b041 _pthread_cond_wait + 41
2 Foundation 0x2eff874f <redacted> + 195
3 AppName 0x0011a5a1 0x66000 + 738721
4 Foundation 0x2f06ddc7 <redacted> + 1063
5 libsystem_pthread.dylib 0x38f9ac5d <redacted> + 141
6 libsystem_pthread.dylib 0x38f9abcf __pthread_start + 103
Thread 3:
0 libsystem_kernel.dylib 0x38f21a84 _mach_msg_trap + 20
1 CoreFoundation 0x2e654561 <redacted> + 157
2 CoreFoundation 0x2e652c81 <redacted> + 793
3 CoreFoundation 0x2e5bd541 _CFRunLoopRunSpecific + 525
4 CoreFoundation 0x2e5bd323 _CFRunLoopRunInMode + 107
5 Foundation 0x2efab827 <redacted> + 255
6 Foundation 0x2effc669 <redacted> + 81
7 AppName 0x00138e95 0x66000 + 863893
8 Foundation 0x2f06ddc7 <redacted> + 1063
9 libsystem_pthread.dylib 0x38f9ac5d <redacted> + 141
10 libsystem_pthread.dylib 0x38f9abcf __pthread_start + 103
Thread 4:
0 libsystem_kernel.dylib 0x38f21a84 _mach_msg_trap + 20
1 CoreFoundation 0x2e654561 <redacted> + 157
2 CoreFoundation 0x2e652c81 <redacted> + 793
3 CoreFoundation 0x2e5bd541 _CFRunLoopRunSpecific + 525
4 CoreFoundation 0x2e5bd323 _CFRunLoopRunInMode + 107
5 Foundation 0x2eff8651 <redacted> + 321
6 Foundation 0x2f06ddc7 <redacted> + 1063
7 libsystem_pthread.dylib 0x38f9ac5d <redacted> + 141
8 libsystem_pthread.dylib 0x38f9abcf __pthread_start + 103
Thread 5:
0 libsystem_kernel.dylib 0x38f34440 ___select + 20
1 libsystem_pthread.dylib 0x38f9ac5d <redacted> + 141
2 libsystem_pthread.dylib 0x38f9abcf __pthread_start + 103
Thread 6:
0 libsystem_kernel.dylib 0x38f34c7c ___workq_kernreturn + 8
Thread 7:
0 libsystem_kernel.dylib 0x38f34c7c ___workq_kernreturn + 8
Thread 0 crashed with ARM Thread State:
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0xffffffff
r4: 0x00000006 r5: 0x3ad6118c r6: 0x17e19650 r7: 0x27d9d924
r8: 0x3140f0da r9: 0x3ad61e30 r10: 0x313f4457 r11: 0x0000000f
ip: 0x00000148 sp: 0x27d9d918 lr: 0x38f9ba53 pc: 0x38f341fc
cpsr: 0x00000010
It's saying that crash is occured on Thread 0 but when i run the app from Xcode, debugger does not show any thread 0 and starts threds from 1 and so on. I am unable to produce this crash.
How can i demystify the crash and where it is heppeing.

Answer 1

you got a reason:
* Terminating app due to uncaught exception 'NSRangeException', reason: '* -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for
empty array'
You are somewhere trying to access the first element of an empty array.
Doesn't really matter which thread crashed