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?

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.

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.

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.