iPhone - no sense after symbolicating a crash file

Apple have sent me a crash log from an app sent for approval. Despite not crashing in all my tests in 3 devices, they say it is crashing on launch. After symbolicating the file, I get this.

Looking at this and means nothing to me. I don't see where the error is. I know it crashed on thread 0, but which line?

Any clues? Thanks.

Hardware Model:      iPhone3,1
Process:         myApplication [11197]
Identifier:      myApplication
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]

Date/Time:       2011-06-08 17:21:12.760 -0700
OS Version:      iPhone OS 4.3.1 (8G4)
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          0x35407a1c 0x353f6000 + 72220
1   libsystem_c.dylib               0x3305f3b4 0x3302c000 + 209844
2   libsystem_c.dylib               0x33057bf8 0x3302c000 + 179192
3   libstdc++.6.dylib               0x34c8fa64 0x34c4b000 + 281188
4   libobjc.A.dylib                 0x307e006c 0x307da000 + 24684
5   libstdc++.6.dylib               0x34c8de36 0x34c4b000 + 273974
6   libstdc++.6.dylib               0x34c8de8a 0x34c4b000 + 274058
7   libstdc++.6.dylib               0x34c8df5a 0x34c4b000 + 274266
8   libobjc.A.dylib                 0x307dec84 0x307da000 + 19588
9   CoreFoundation                  0x3613b1b8 0x36099000 + 663992
10  CoreFoundation                  0x3613a642 0x36099000 + 661058
11  CoreFoundation                  0x360b1178 0x36099000 + 98680
12  myApplication                       0x000bad78 0xb3000 + 32120
13  myApplication                       0x000bb070 0xb3000 + 32880
14  myApplication                       0x000bb16c 0xb3000 + 33132
15  UIKit                           0x35ed556e 0x35cda000 + 2078062
16  PhotoLibrary                    0x3370be90 0x336c8000 + 278160
17  PhotoLibrary                    0x3370a852 0x336c8000 + 272466
18  PhotoLibrary                    0x33724338 0x336c8000 + 377656
19  PhotoLibrary                    0x33724094 0x336c8000 + 376980
20  Foundation                      0x34a8d17c 0x34a7f000 + 57724
21  CoreFoundation                  0x36106208 0x36099000 + 446984
22  CoreFoundation                  0x360a0ee4 0x36099000 + 32484
23  Foundation                      0x34a8a5cc 0x34a7f000 + 46540
24  Celestial                       0x34e33072 0x34e29000 + 41074
25  Celestial                       0x34e54a0a 0x34e29000 + 178698
26  CoreFoundation                  0x361059a8 0x36099000 + 444840
27  CoreFoundation                  0x36106208 0x36099000 + 446984
28  CoreFoundation                  0x360a0ee4 0x36099000 + 32484
29  CoreFoundation                  0x360ac42e 0x36099000 + 78894
30  CoreMedia                       0x30db4e68 0x30da0000 + 85608
31  MediaToolbox                    0x3685c830 0x3679c000 + 788528
32  MediaToolbox                    0x3686011e 0x3679c000 + 803102
33  MediaToolbox                    0x3686009c 0x3679c000 + 802972
34  MediaToolbox                    0x3685fffe 0x3679c000 + 802814
35  CoreFoundation                  0x36103bd8 0x36099000 + 437208
36  CoreFoundation                  0x3610ea90 0x36099000 + 481936
37  CoreFoundation                  0x36110838 0x36099000 + 489528
38  CoreFoundation                  0x36111606 0x36099000 + 493062
39  CoreFoundation                  0x360a1ebc 0x36099000 + 36540
40  CoreFoundation                  0x360a1dc4 0x36099000 + 36292
41  GraphicsServices                0x35ac1418 0x35abd000 + 17432
42  GraphicsServices                0x35ac14c4 0x35abd000 + 17604
43  UIKit                           0x35d08d62 0x35cda000 + 191842
44  UIKit                           0x35d06800 0x35cda000 + 182272
45  myApplication                       0x000b4c9a 0xb3000 + 7322
46  myApplication                       0x000b4c64 0xb3000 + 7268

Thread 0 crashed with ARM Thread State:
  r0: 0x00000000    r1: 0x00000000      r2: 0x00000001      r3: 0x00000000
  r4: 0x3ecdf48c    r5: 0x00000006      r6: 0x1eda0afc      r7: 0x2feb029c
  r8: 0x1ed58c90    r9: 0x00000065     r10: 0x1edefec0     r11: 0x00000000
  ip: 0x00000148    sp: 0x2feb0290      lr: 0x3305f3bb      pc: 0x35407a1c
cpsr: 0x000f0010

Binary Images:
 0xb3000 -    0xcdfff +myApplication armv7   /var/mobile/Applications/57BDE03E-561E-4BA8-8D68-4E037FC2E54F/myApplication.app/myApplication
0x2feb2000 - 0x2fed7fff  dyld armv7   /usr/lib/dyld
0x30776000 - 0x30777fff  MP4VH2.videodecoder armv7   /System/Library/VideoDecoders/MP4VH2.videodecoder
0x30778000 - 0x30781fff  CoreVideo armv7   /System/Library/Frameworks/CoreVideo.framework/CoreVideo

If you're using Xcode 4, there's a known issue with it not symbolicating crash logs correctly. See this question for a workaround.