iOS app crashing on device with exception EXC_BAD_ACCESS (SIGSEGV) KERN_INVALID_ADDRESS

Good day everyone,

I am in the process of creating an iOS app for iPhone/iPod/iPad using Titanium SDK 3.1.1GA and using iOS 6.1 SDK and Xcode 4.6.3.

I am at my wits end trying to figure out why the app is randomly crashing on physical device but runs fine in the simulator. This especially happens when I open or close the same window at different times.

The module returns a window and inside the module I add labels, views, buttons, a listView, videoPlayer and related event handlers.

I open the window through a tableView click event listener like this:

tableView.addEventListener('click',function(e) {
 
        userDownloadWindowObj = new UserDownloadWindow();
        userDownloadWindowObj.open({modal: true});
        userDownloadWindowObj.addEventListener('close', function(e) {
            cleanUserDownloadWindow();
        });
    });
 
    function cleanUserDownloadWindow() {
        userDownloadWindowObj = null;
    }

And when I close the window, I have a button that listens to click event

/**
     * Event: Closing window and clean up
     */
    doneButton.addEventListener('click', function(e) {
 
        Ti.App.idleTimerDisabled = false;
        clearInterval(interval);
        videoPlayer.stop();
        videoPlayer.release();
        win.close();
    });

From what I read, the exception related to memory management. It is trying to access objects in memory that have been already released or something along that line. But I am not sure how I can write code so that it prevents this from happening.

Does anyone have any tips in avoiding this?

Below is a re-symbolicated crash log. Thread 0 crashes at same points, just the memory address is different.

Incident Identifier: 01B3057A-A171-4279-AA2D-02ED966C0D90
CrashReporter Key:   4bb65be56495aeb9a0da56d387813bfcc5af932a
Hardware Model:      iPod4,1
Process:         AVAPP [2215]
Path:            /var/mobile/Applications/D7E94FE7-E471-4F12-AE46-65917A0244BD/AVAPP.app/AVAPP
Identifier:      AVAPP
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]
 
Date/Time:       2013-06-21 21:35:00.464 -0400
OS Version:      iOS 6.1.3 (10B329)
Report Version:  104
 
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x80000010
Crashed Thread:  0
 
Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x3aa19f2a objc_release + 10
1   libsystem_blocks.dylib          0x3ae61ab0 _Block_release + 220
2   AVAPP                       0x001810fe __destroy_helper_block_ (TiBase.m:271)
3   libsystem_blocks.dylib          0x3ae61ab0 _Block_release + 220
4   AVAPP                       0x0018129c TiThreadProcessPendingMainThreadBlocks (TiBase.m:358)
5   libdispatch.dylib               0x3ae3411c _dispatch_call_block_and_release + 8
6   libdispatch.dylib               0x3ae334b4 _dispatch_client_callout + 20
7   libdispatch.dylib               0x3ae34dc6 _dispatch_main_queue_callback_4CF$VARIANT$up + 222
8   CoreFoundation                  0x32d71f36 __CFRunLoopRun + 1286
9   CoreFoundation                  0x32ce4eb8 CFRunLoopRunSpecific + 352
10  CoreFoundation                  0x32ce4d44 CFRunLoopRunInMode + 100
11  GraphicsServices                0x368972e6 GSEventRunModal + 70
12  UIKit                           0x34bfa2fc UIApplicationMain + 1116
13  AVAPP                       0x000f77aa main (main.m:36)
14  AVAPP                       0x000f630c 0xf4000 + 8972

Same exception log at different time

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x3aa19f2a objc_release + 10
1   libsystem_blocks.dylib          0x3ae61ab0 _Block_release + 220
2   AVAPP                       0x0013b0fe __destroy_helper_block_ (TiBase.m:271)
3   libsystem_blocks.dylib          0x3ae61ab0 _Block_release + 220
4   AVAPP                       0x0013b29c TiThreadProcessPendingMainThreadBlocks (TiBase.m:358)
5   libdispatch.dylib               0x3ae3411c _dispatch_call_block_and_release + 8
6   libdispatch.dylib               0x3ae334b4 _dispatch_client_callout + 20
7   libdispatch.dylib               0x3ae34dc6 _dispatch_main_queue_callback_4CF$VARIANT$up + 222
8   CoreFoundation                  0x32d71f36 __CFRunLoopRun + 1286
9   CoreFoundation                  0x32ce4eb8 CFRunLoopRunSpecific + 352
10  CoreFoundation                  0x32ce4d44 CFRunLoopRunInMode + 100
11  GraphicsServices                0x368972e6 GSEventRunModal + 70
12  UIKit                           0x34bfa2fc UIApplicationMain + 1116
13  AVAPP                       0x000b17aa main (main.m:36)
14  AVAPP                       0x000b030c 0xae000 + 8972