application crashes when back button is clicked and No exceptions shown - Beginner

My application crashes when i click on the navigation controller back button , it doesn't show any exception or any.

I don't have any clue, or could give you more detail about the crash, since there's no exception or any details printed on the screen.

I think its due to a memory leak, but then i am not sure. have anyone come across this before

开发者_开发技巧Any clues?

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Set NSZombieEnabled, MallocStackLogging, and guard malloc in the debugger. Then, when your App crashes, type this in the gdb comsole:

(gdb) info malloc-history 0x543216

Replace 0x543216 with the address of the object that caused the crash, and you will get a much more useful stack trace and it should help you pinpoint the exact line in your code that is causing the problem.

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First, memory leaks don't cause crashes, over releases can.

Second, look at the console, either there is crash information or there was no crash.

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when your App "crashes" OS writes it to a crashreport. Look at ~/Library/Logs/DiagnosticReports/ folder and Look for most recent crash report of your app there. Post that info from crash report here if you dont understand it.