iPAD App Quits on Launch with crash log EXC_CRASH (SIGABRT)?

I have developed an application and successfully uploaded onto the Appstore. Now I have upgraded my app and submitted the same to the AppStore, apple rejected my application saying that application is getting crashed after splash screen.

When I tested the application I have not got the crash not even a single time so i have submitted the app with some try catch blocks and fixed one issue with low wi-fi conditions.

But again apple rejected the app saying the same reason application is crashing after splash screen. Crash log says main thread is killed with EXC_CRASH (SIGABRT).

Apple is getting this crash 100% reproducible but for me not even once.

could anyone please help/suggest me to understand what the exact problem.

Below is the crash log shared by apple.

Thanks in advance...

Incident Identifier: 462DA5F9-403E-425F-AD94-A298300163EE
CrashReporter Key:   25bc4ee040c53d33c4bc541509cc502e98db0401
Hardware Model:      iPad2,2
Process:         MobileStyle [31055]
Path:            /var/mobile/Applications/D6082808-BE54-4DC1-A24E-13B51F9A7496/MobileStyle.app/MobileStyle
Identifier:      MobileStyle
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]

Date/Time:       2011-09-15 13:50:38.931 -0700
OS Version:      iPhone OS 4.3.5 (8L1)
Report Version:  104

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x3596ba1c 0x3595a000 + 72220
1   libsystem_c.dylib               0x31a5d3b4 0x31a2a000 + 209844
2   libsystem_c.dylib               0x31a55bf8 0x31a2a000 + 179192
3   libstdc++.6.dylib               0x31ea7a64 0x31e63000 + 281188
4   libobjc.A.dylib                 0x32e3406c 0x32e2e000 + 24684
5   libstdc++.6.dylib               0x31ea5e36 0x31e63000 + 273974
6   libstdc++.6.dylib               0x31ea5e8a 0x31e63000 + 274058
7   libstdc++.6.dylib               0x31ea5f5a 0x31e63000 + 274266
8   libobjc.A.dylib                 0x32e32c84 0x32e2e000 + 19588
9   CoreFoundation                  0x3158a3c6 0x314ec000 + 648134
10  Foundation                      0x330d3ed4 0x3306c000 + 425684
11  Foundation                      0x3308c9c4 0x3306c000 + 133572
12  Foundation                      0x3308c210 0x3306c000 + 131600
13  UIKit                           0x35eb187c 0x35d4c000 + 1464444
14  Foundation                      0x3306e428 0x3306c000 + 9256
15  UIKit                           0x35f568d8 0x35d4c000 + 2140376
16  CoreFoundation                  0x31522d74 0x314ec000 + 224628
17  CoreFoundation                  0x31522996 0x314ec000 + 223638
18  UIKit                           0x35f55840 0x35d4c000 + 2136128
19  UIKit                           0x35f56e02 0x35d4c000 + 2141698
20  UIKit                           0x35ed05e2 0x35d4c000 + 1590754
21  UIKit                           0x35e9df9e 0x35d4c000 + 1384350
22  UIKit                           0x35d82eb8 0x35d4c000 + 224952
23  MobileStyle                     0x00034dca 0x1000 + 212426
24  MobileStyle                     0x0003531c 0x1000 + 213788
25  MobileStyle                     0x000358b8 0x1000 + 215224
26  UIKit                           0x35d82f08 0x35d4c000 + 225032
27  UIKit                           0x35d915e8 0x35d4c000 + 284136
28  UIKit                           0x35d91458 0x35d4c000 + 283736
29  UIKit                           0x35d91356 0x35d4c000 + 283478
30  UIKit                           0x35d90e2e 0x35d4c000 + 282158
31  UIKit                           0x35d90c3c 0x35d4c000 + 281660
32  UIKit                           0x35d90b80 0x35d4c000 + 281472
33  UIKit                           0x35d90b1c 0x35d4c000 + 281372
34  UIKit                           0x35d515f4 0x35d4c000 + 22004
35  CoreFoundation                  0x314f7efc 0x314ec000 + 48892
36  QuartzCore                      0x32f90bae 0x32f8e000 + 11182
37  QuartzCore                      0x32f90966 0x32f8e000 + 10598
38  QuartzCore                      0x32f908a0 0x32f8e000 + 10400
39  UIKit                           0x35d515d0 0x35d4c000 + 21968
40  UIKit                           0x35df976e 0x35d4c000 + 710510
41  UIKit                           0x35df8bba 0x35d4c000 + 707514
42  UIKit                           0x35dfc670 0x35d4c000 + 722544
43  UIKit                           0x35d908e4 0x35d4c000 + 280804
44  UIKit                           0x35df7a08 0x35d4c000 + 702984
45  UIKit                           0x35df66f0 0x35d4c000 + 698096
46  UIKit                           0x35df5cd0 0x35d4c000 + 695504
47  MobileStyle                     0x00033850 0x1000 + 206928
48  UIKit                           0x35d8181a 0x35d4c000 + 219162
49  UIKit                           0x35d7bb5e 0x35d4c000 + 195422
50  UIKit                           0x35d507d0 0x35d4c000 + 18384
51  UIKit                           0x35d5020e 0x35d4c000 + 16910
52  MobileStyle                     0x000b5780 0x1000 + 739200
53  UIKit                           0x35d4fc4c 0x35d4c000 + 15436
54  GraphicsServices                0x32057e70 0x32053000 + 20080
55  CoreFoundation                  0x31561a90 0x314ec000 + 481936
56  CoreFoundation                  0x31563838 0x314ec000 + 489528
57  CoreFoundation                  0x31564606 0x314ec000 + 493062
58  CoreFoundation                  0x314f4ebc 0x314ec000 + 36540
59  CoreFoundation                  0x314f4dc4 0x314ec000 + 36292
60  UIKit                           0x35d7ad42 0x35d4c000 + 191810
61  UIKit                           0x35d78800 0x35d4c000 + 182272
62  MobileStyle                     0x00002922 0x1000 + 6434
63  MobileStyle                     0x00002824 0x1000 + 6180

Thread 1:
0   libsystem_kernel.dylib          0x3596c3ec 0x3595a000 + 74732
1   libsystem_c.dylib               0x31a5e6d8 0x31a2a000 + 214744
2   libsystem_c.dylib               0x31a5ebbc 0x31a2a000 + 215996

Thread 2 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 2:
0   libsystem_kernel.dylib          0x3596cfbc 0x3595a000 + 77756
1   libdispatch.dylib               0x314ceed4 0x314ce000 + 3796
2   libdispatch.dylib               0x314cff3a 0x314ce000 + 7994
3   libdispatch.dylib               0x314cf4ec 0x314ce000 + 5356
4   libsystem_c.dylib               0x31a5e58a 0x31a2a000 + 214410
5   libsystem_c.dylib               0x31a5ebbc 0x31a2a000 + 215996

Thread 3:
0   libsystem_kernel.dylib          0x3596c3ec 0x3595a000 + 74732
1   libsystem_c.dylib               0x31a5e6d8 0x31a2a000 + 214744
2   libsystem_c.dylib               0x31a5ebbc 0x31a2a000 + 215996

Thread 4 name:  WebThread
Thread 4:
0   libsystem_kernel.dylib          0x35969c00 0x3595a000 + 64512
1   libsystem_kernel.dylib          0x35969758 0x3595a000 + 63320
2   CoreFoundation                  0x315622b8 0x314ec000 + 484024
3   CoreFoundation                  0x31564562 0x314ec000 + 492898
4   CoreFoundation                  0x314f4ebc 0x314ec000 + 36540
5   CoreFoundation                  0x314f4dc4 0x314ec000 + 36292
6   WebCore                         0x322fc27e 0x322f6000 + 25214
7   libsystem_c.dylib               0x31a5d30a 0x31a2a000 + 209674
8   libsystem_c.dylib               0x31a5ebb4 0x31a2a000 + 215988

Thread 5:
0   libsystem_kernel.dylib          0x3596c3ec 0x3595a000 + 74732
1   libsystem_c.dylib               0x31a5e6d8 0x31a2a000 + 214744
2   libsystem_c.dylib               0x31a5ebbc 0x31a2a000 + 215996

Thread 0 crashed with ARM Thread State:
    r0: 0x00000000    r1: 0x00000000      r2: 0x00000001      r3: 0x00000000
    r4: 0x3eba948c    r5: 0x00000006      r6: 0x005a3bec      r7: 0x2fdfc2bc
    r8: 0x005a2590    r9: 0x00000065     r10: 0x0039fb30     r11: 0x0039fb30
    ip: 0x00000148    sp: 0x2fdfc2b0      lr: 0x31a5d3bb      pc: 0x3596ba1c
  cpsr: 0x000f0010

Check out this link:

This might help you

How to read crash log? How to find why the app crashes in system library? What means EXC_CRASH (SIGABRT)?

This link explains the basic causes of the EXC_CRASH(SIGABRT) crashes and also it explains that you need a dSym files to symbolicate your crash log.

Hope this helps you.

EDIT:

Also this links are very helpful. Please check them out:

Xcode 4 failure to symbolicate Crash Log

How to diagnose EXC_CRASH?