iphone - App crashes very rare on start up -


i have strange problem app, sometimes, rare in fact, when run on iphone4, crashes right @ beginning, got crash log, can't make of it. i'm kind of stuck, should look? here log:

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   app                  0x0000fb8c 0x1000 + 60300 5   app                  0x0000fec4 0x1000 + 61124 6   app                  0x00009ffc 0x1000 + 36860 7   corefoundation                  0x359c979c __invoking___ + 60 8   corefoundation                  0x35941436 -[nsinvocation invoke] + 102 9   app                  0x0005f408 0x1000 + 386056 10  app                  0x0005c9b8 0x1000 + 375224 11  corefoundation                  0x3593656a -[nsobject(nsobject) performselector:withobject:withobject:] + 18 12  app                  0x000b60d4 0x1000 + 741588 13  app                  0x000b6bc0 0x1000 + 744384 14  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  app                  0x00002118 0x1000 + 4376 30  app                  0x00002084 0x1000 + 4228

i not able find pattern crash, happens maybe once in 30-40 app start-ups. beats me, beside fact don't know how interpret crash log, why happens rare, no apparent reason?

you need symbolicate crash log before can see part of code crashing.


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