Debugging in iOS / callStackReturnAddresses and callStackSymbols

Question

i set an uncaughtExceptionHandler in my iOS app and got the following data from a user but i don't know how to interpret them to find the location of the error. What is the number behind the plus sign for? how can i use the addresses to get the location of the error?

callStackReturnAddresses

(0x305b1f53 0x3ac1a6af 0x304e85f3 0xe7cd5 0x32d3d419 0x32eb3e0b 0x32dd1a83 0x32dd188d 0x32dd1825 0x32d23023 0x329ac24b 0x329a7a5b 0x329a78ed 0x329a72ff 0x329a710f 0x329a0e3d 0x3057d1d5 0x3057ab79 0x3057aebb 0x304e5ce7 0x304e5acb 0x351b3283 0x32d87a41 0xb51d7 0xb5198)

callStackSymbols

(
    0   CoreFoundation                      0x305b1f6b <redacted> + 154
    1   libobjc.A.dylib                     0x3ac1a6af objc_exception_throw + 38
    2   CoreFoundation                      0x304e85f3 <redacted> + 230
    3   MyApp                               0x000e7cd5 MyApp + 236757
    4   UIKit                               0x32d3d419 <redacted> + 472
    5   UIKit                               0x32eb3e0b <redacted> + 834
    6   UIKit                               0x32dd1a83 <redacted> + 418
    7   UIKit                               0x32dd188d <redacted> + 44
    8   UIKit                               0x32dd1825 <redacted> + 184
    9   UIKit                               0x32d23023 <redacted> + 346
    10  QuartzCore                          0x329ac24b <redacted> + 142
    11  QuartzCore                          0x329a7a5b <redacted> + 350
    12  QuartzCore                          0x329a78ed <redacted> + 16
    13  QuartzCore                          0x329a72ff <redacted> + 230
    14  QuartzCore                          0x329a710f <redacted> + 314
    15  QuartzCore                          0x329a0e3d <redacted> + 56
    16  CoreFoundation                      0x3057d1d5 <redacted> + 20
    17  CoreFoundation                      0x3057ab79 <redacted> + 284
    18  CoreFoundation                      0x3057aebb <redacted> + 730
    19  CoreFoundation                      0x304e5ce7 CFRunLoopRunSpecific + 522
    20  CoreFoundation                      0x304e5acb CFRunLoopRunInMode + 106
    21  GraphicsServices                    0x351b3283 GSEventRunModal + 138
    22  UIKit                               0x32d87a41 UIApplicationMain + 1136
    23  MyApp                               0x000b51d7 MyApp + 29143
    24  MyApp                               0x000b5198 MyApp + 29080
)

Answer 1

Symbols are not reliable available device-side, and on iOS 6 and later, many system symbols will simply be <redacted>.

From here: https://code.google.com/p/plcrashreporter/issues/detail?id=40