iOS App Crash on startup - iphone

Question

The latest version of my app has started to crash on startup for some users. There is only 1 crash report in itunes which is included below. I have been unable to reproduce on any devices.
The changes between the two version are
Integrated two third party libraries (iNotify, openUDID)
Switched from the GCC compiler to the Apple LLVM 3.1 compiler (new libraries need arc support)
Compiled the new libraries's code with arc enabled, left arc disabled for the rest of the project.
I added 1 line to the didFinishLaunchingWithOptions in my appdelegate for iNotify. From the stack trace through I do not think its crashing in there.
At a bit of a loss where to go with this. Any help would be appreciated. Thanks!
Hardware Model: iPhone4,1
Process: MyAPP [3251]
Path: /var/mobile/Applications/228BBF42-A374-4773-8C18-EFA47CE98C02/MyAPP.app/MyAPP
Identifier: MyAPP
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2012-05-03 19:50:07.917 -0500
OS Version: iPhone OS 5.1 (9B179)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x3729e88f __exceptionPreprocess + 163
1 libobjc.A.dylib 0x357a4259 objc_exception_throw + 33
2 CoreFoundation 0x372a1a9b -[NSObject doesNotRecognizeSelector:] + 175
3 CoreFoundation 0x372a0915 ___forwarding___ + 301
4 CoreFoundation 0x371fb650 _CF_forwarding_prep_0 + 48
5 UIKit 0x33aa9f93 -[UIAlertView(Private) _popoutAnimationDidStop:finished:] + 855
6 UIKit 0x3395fc53 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 471
7 UIKit 0x3396557d -[UIViewAnimationState animationDidStop:finished:] + 53
8 QuartzCore 0x341fbc2f CA::Layer::run_animation_callbacks(void*) + 203
9 libdispatch.dylib 0x344f6ee7 _dispatch_main_queue_callback_4CF$VARIANT$mp + 195
10 CoreFoundation 0x372712ad __CFRunLoopRun + 1269
11 CoreFoundation 0x371f44a5 CFRunLoopRunSpecific + 301
12 CoreFoundation 0x371f436d CFRunLoopRunInMode + 105
13 GraphicsServices 0x32101439 GSEventRunModal + 137
14 UIKit 0x33978e7d UIApplicationMain + 1081
15 MyAPP 0x00002bfb main (main.m:14)
16 MyAPP 0x00002bb4 0x00002bb4
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x3571d32c __pthread_kill + 8
1 libsystem_c.dylib 0x3186b208 pthread_kill + 48
2 libsystem_c.dylib 0x31864298 abort + 88
3 libc++abi.dylib 0x34e70f64 abort_message + 40
4 libc++abi.dylib 0x34e6e346 _ZL17default_terminatev + 18
5 libobjc.A.dylib 0x357a4350 _objc_terminate + 140
6 libc++abi.dylib 0x34e6e3be _ZL19safe_handler_callerPFvvE + 70
7 libc++abi.dylib 0x34e6e44a std::terminate() + 14
8 libc++abi.dylib 0x34e6f81e __cxa_rethrow + 82
9 libobjc.A.dylib 0x357a42a2 objc_exception_rethrow + 6
10 CoreFoundation 0x371f4506 CFRunLoopRunSpecific + 398
11 CoreFoundation 0x371f4366 CFRunLoopRunInMode + 98
12 GraphicsServices 0x32101432 GSEventRunModal + 130
13 UIKit 0x33978e76 UIApplicationMain + 1074
14 MyAPP 0x00002bf4 main (main.m:14)
15 MyAPP 0x00002bac 0x00002bac
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x3570d3a8 kevent + 24
1 libdispatch.dylib 0x344f7f04 _dispatch_mgr_invoke + 708
2 libdispatch.dylib 0x344f7c22 _dispatch_mgr_thread + 30
Thread 2 name: WebThread
Thread 2:
0 libsystem_kernel.dylib 0x3570d004 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3570d1fa mach_msg + 50
2 CoreFoundation 0x372723ec __CFRunLoopServiceMachPort + 120
3 CoreFoundation 0x37271124 __CFRunLoopRun + 876
4 CoreFoundation 0x371f449e CFRunLoopRunSpecific + 294
5 CoreFoundation 0x371f4366 CFRunLoopRunInMode + 98
6 WebCore 0x32eb40f0 _ZL12RunWebThreadPv + 396
7 libsystem_c.dylib 0x3182c72e _pthread_start + 314
8 libsystem_c.dylib 0x3182c5e8 thread_start + 0
Thread 3:
0 libsystem_kernel.dylib 0x3571dcd4 __workq_kernreturn + 8
1 libsystem_c.dylib 0x31826f36 _pthread_wqthread + 610
2 libsystem_c.dylib 0x31826cc8 start_wqthread + 0
Thread 4 name: com.apple.CFSocket.private
Thread 4:
0 libsystem_kernel.dylib 0x3571d570 __select + 20
1 CoreFoundation 0x3727663a __CFSocketManager + 726
2 libsystem_c.dylib 0x3182c72e _pthread_start + 314
3 libsystem_c.dylib 0x3182c5e8 thread_start + 0
Thread 5:
0 libsystem_kernel.dylib 0x3571dcd4 __workq_kernreturn + 8
1 libsystem_c.dylib 0x31826f36 _pthread_wqthread + 610
2 libsystem_c.dylib 0x31826cc8 start_wqthread + 0
Some additional code.
There is an alertview defined in the appdelegate as follows:
#import <UIKit/UIKit.h>
#class MyAPPViewController;
#interface MyAPPAppDelegate : NSObject <UIApplicationDelegate> {
UIViewController *rvc;
UIAlertView *m_cAlertControl;
}
#property (nonatomic, retain) IBOutlet UIWindow *window;
-(BOOL)shouldNag;
-(void)shouldEnableUI:(BOOL)pIsEnable;
-(void)updateRunCount;
#end
and a method implemented in the app delegate as follows:
-(void)shouldEnableUI:(BOOL)pIsEnable
{
if(NO == pIsEnable)
{
if (nil == m_cAlertControl) {
m_cAlertControl = [[UIAlertView alloc] init];
}
m_cAlertControl.backgroundColor = [UIColor clearColor];
m_cAlertControl.opaque = NO;
[m_cAlertControl setHidden:YES];
[m_cAlertControl show];
}
else {
if (nil != m_cAlertControl) {
[m_cAlertControl dismissWithClickedButtonIndex:0 animated:YES];
}
}
}
The View controller's make calls to the method like this:
[appDelegate shouldEnableUI:NO];

Answer 1

On seeing crash logs issue seems like call has been made to UIAlertViewDelegate after it has been released.
You need to release that in the controller where you are using alert -
-(void)dealloc {
self.alertView.delegate = nil; //setting delegate to nil
self.alertView = nil; //if you have defined alert as property
//other release statements of your controller
[super dealloc];
}
You can add some code of your app if you want some other information, or this is not the case with your app.
EDIT 1 -
-(void)dealloc {
m_cAlertControl.delegate = nil; //setting delegate to nil
[m_cAlertControl release];
//other release statements of your controller
[super dealloc];
}

Answer 2

I would say that this is the biggest pointer you have
[NSObject doesNotRecognizeSelector:] + 175
Looks like you have a missing selector method somewhere.