When I call PopViewController on a landscape ViewController a crash occurs. However when i call PopViewController on a Portrait ViewController a crash doesn't occur.
This only occurs on iOS7 - worked fine previously...
[self.navigationController popViewControllerAnimated:TRUE];
I'm super stuck on this so any help would be appreciated :)
Here is my Symbolocated Crash Log:
Exception Type: EXC_CRASH (SIGABRT) Exception Codes:
0x0000000000000000, 0x0000000000000000 Triggered by Thread: 0
Last Exception Backtrace: 0 CoreFoundation
0x2d9b2f4e __exceptionPreprocess + 126
1 libobjc.A.dylib 0x3801b6aa objc_exception_throw + 34
2 CoreFoundation 0x2d9b2e90 +[NSException
raise:format:] + 100
3 UIKit 0x3020ee70 -[UIViewController
_preferredInterfaceOrientationForPresentationInWindow:fromInterfaceOrientation:]
+ 496
4 UIKit 0x3020d6ae -[UIWindowController
transition:fromViewController:toViewController:target:didEndSelector:animation:]
+ 2054
5 UIKit 0x3023ff86 -[UIViewController
_dismissViewControllerWithTransition:from:completion:] + 1390
6 UIKit 0x301ef1e0 -[UIViewController
dismissViewControllerWithTransition:completion:] + 1024
7 UIKit 0x303ecae2 -[UINavigationController
_popViewControllerAndUpdateInterfaceOrientationAnimated:] + 814 8 UIKit 0x301ef6de -[UINavigationController
_popViewControllerWithTransition:allowPoppingLast:] + 290
9 MyApp 0x00087e5a 0x55000 + 208474
10 MyApp 0x00088c56 0x55000 + 212054
11 MyApp 0x000889aa 0x55000 + 211370
12 MyApp 0x000a13f6 0x55000 + 312310
13 UIKit 0x3023b540 -[UIWindowController
transitionViewDidComplete:fromView:toView:removeFromView:] + 1908
14 UIKit 0x3023acf6 __101-[UIWindowController
transition:fromViewController:toViewController:target:didEndSelector:animation:]_block_invoke293
+ 166
15 UIKit 0x3023ac1e
-[_UIViewControllerTransitionContext completeTransition:] + 70
16 UIKit 0x3023ab08 -[UITransitionView
notifyDidCompleteTransition:] + 284 17 UIKit
0x3023a610 -[UITransitionView _didCompleteTransition:] + 940
18 UIKit 0x3015bc32 -[UIViewAnimationState
sendDelegateAnimationDidStop:finished:] + 174
19 UIKit 0x3015bb4a -[UIViewAnimationState
animationDidStop:finished:] + 66
20 QuartzCore 0x2fdb3d04
CA::Layer::run_animation_callbacks(void*) + 228
21 libdispatch.dylib 0x384fed62 _dispatch_client_callout
+ 18
22 libdispatch.dylib 0x385057bc
_dispatch_main_queue_callback_4CF$VARIANT$mp + 264
23 CoreFoundation 0x2d97d81c
CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 4
24 CoreFoundation 0x2d97c0f0 __CFRunLoopRun + 1296
25 CoreFoundation 0x2d8e6ce2 CFRunLoopRunSpecific +
518
26 CoreFoundation 0x2d8e6ac6 CFRunLoopRunInMode + 102
27 GraphicsServices 0x325b427e GSEventRunModal + 134
28 UIKit 0x30188a3c UIApplicationMain + 1132
29 MyApp 0x0005ca84 0x55000 + 31364
30 MyApp 0x0005ca0c 0x55000 + 31244
Turns out that the reason it crashed on iOS7 was due to a missing piece of code on the previous view controller to tell it to show the next previous page as portrait!
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationPortrait;
}
maybe your view controller had killed when you rotate, so when you call popViewControllerAnimated it will make crash.
Related
My app relatively often crashes with SIGSEGV. Unfortunately, I can not reproduce the crash and only see crash reports in Hockeyapp. I tried turning zombies on, too.
Looking at the crash report it seems that app crashes when processing touches (when user scrolling or something like this). No my app code mentioned in the stack trace.
The question is: how is it possible to have memory issue in this scenario? What would you recommend to reproduce and fix the issue?
Exception Type: SIGSEGV
Exception Codes: SEGV_ACCERR at 0x71a86113
Crashed Thread: 0
Application Specific Information:
objc_msgSend() selector name: convertPoint:fromLayer:
Thread 0 Crashed:
0 libobjc.A.dylib 0x2106fae6 objc_msgSend_stret + 6
1 UIKit 0x25e7a349 -[UIView(Geometry) convertPoint:fromView:] + 98
2 UIKit 0x25e7e987 __38-[UIView(Geometry) hitTest:withEvent:]_block_invoke + 104
3 CoreFoundation 0x217e8279 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 86
4 CoreFoundation 0x217e81a7 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 248
5 UIKit 0x25e7e447 -[UIView(Geometry) hitTest:withEvent:] + 492
6 UIKit 0x26146f0d -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 62
7 UIKit 0x25e7e9bd __38-[UIView(Geometry) hitTest:withEvent:]_block_invoke + 158
8 CoreFoundation 0x217e8279 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 86
9 CoreFoundation 0x217e81a7 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 248
10 UIKit 0x25e7e447 -[UIView(Geometry) hitTest:withEvent:] + 492
11 UIKit 0x26146f0d -[UIView(Geometry) _hitTest:withEvent:windowServerHitTestWindow:] + 62
12 UIKit 0x26136491 __70+[UIWindow _hitTestToPoint:forEvent:windowServerHitTestWindow:screen:]_block_invoke + 186
13 UIKit 0x25e4783f +[UIWindow _topVisibleWindowPassingTest:] + 156
14 UIKit 0x26136399 +[UIWindow _hitTestToPoint:forEvent:windowServerHitTestWindow:screen:] + 142
15 UIKit 0x26136629 -[UIWindow _targetWindowForPathIndex:atPoint:forEvent:windowServerHitTestWindow:onScreen:] + 158
16 UIKit 0x260ffb61 _UIApplicationHandleDigitizerEvent + 10982
17 UIKit 0x25e4123f _UIApplicationHandleEventQueue + 3836
18 CoreFoundation 0x21889dff __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 12
19 CoreFoundation 0x218899ed __CFRunLoopDoSources0 + 450
20 CoreFoundation 0x21887d5b __CFRunLoopRun + 792
21 CoreFoundation 0x217d7229 CFRunLoopRunSpecific + 518
22 CoreFoundation 0x217d7015 CFRunLoopRunInMode + 106
23 GraphicsServices 0x22dc7ac9 GSEventRunModal + 158
24 UIKit 0x25eab189 UIApplicationMain + 142
25 My App. 0x0005376b main (main.m:14)
26 ??? 0x2147f873 0x0 + 0
I am trying to fix a bug that I am not able to recreate, it doesn't happen to my device (iPhone 5s) or in any iOS simulator but happened only once in an iPhone 7 of my client. When the client deleted and downloaded again the app, the bug disappeared, so I am searching for a ghost now.
I was able to get the crash log file from the clients phone and symbolicate it. Here are some useful informations I extracted:
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 0
In the un-symbolicated crash report: (check 2 and 3 line)
Last Exception Backtrace:
0 CoreFoundation 0x18c92efe0 __exceptionPreprocess + 124
1 libobjc.A.dylib 0x18b390538 objc_exception_throw + 56
2 CoreFoundation 0x18c92ef28 +[NSException raise:format:] + 116
3 Foundation 0x18d324df0 -[NSString stringByAppendingString:] + 112
4 myApp 0x100119ea8 0x100004000 + 1138344
5 myApp 0x100119784 0x100004000 + 1136516
6 UIKit 0x192ad1204 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 380
7 UIKit 0x192cdd738 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 3452
8 UIKit 0x192ce31e0 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1684
9 UIKit 0x192cf7d18 __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke.3151 + 48
10 UIKit 0x192ce0474 -[UIApplication workspaceDidEndTransaction:] + 168
11 FrontBoardServices 0x18e4d7884 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 36
12 FrontBoardServices 0x18e4d76f0 -[FBSSerialQueue _performNext] + 176
13 FrontBoardServices 0x18e4d7aa0 -[FBSSerialQueue _performNextFromRunLoopSource] + 56
14 CoreFoundation 0x18c8dd42c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
15 CoreFoundation 0x18c8dcd9c __CFRunLoopDoSources0 + 540
16 CoreFoundation 0x18c8da9a8 __CFRunLoopRun + 744
17 CoreFoundation 0x18c80ada4 CFRunLoopRunSpecific + 424
18 UIKit 0x192aca384 -[UIApplication _run] + 652
19 UIKit 0x192ac5058 UIApplicationMain + 208
20 myApp 0x10014b8ac 0x100004000 + 1341612
21 libdyld.dylib 0x18b81959c start + 4
and in the symbolicated crash report:(check 4 and 5 line)
Last Exception Backtrace:
0 CoreFoundation 0x185f7fd38 0x185e3e000 + 1318200
1 libobjc.A.dylib 0x185494528 0x18548c000 + 34088
2 CoreFoundation 0x185f7fc80 0x185e3e000 + 1318016
3 Foundation 0x18686e760 0x186862000 + 51040
4 myApp 0x10469f928 -[AppDelegate initViewController] (AppDelegate.m:96)
5 myApp 0x10469f520 -[AppDelegate application:didFinishLaunchingWithOptions:] (AppDelegate.m:30)
6 UIKit 0x18f3ff050 0x18f380000 + 520272
7 UIKit 0x18f5f2898 0x18f380000 + 2566296
8 UIKit 0x18f5f76e4 0x18f380000 + 2586340
9 UIKit 0x18f885454 0x18f380000 + 5264468
10 UIKit 0x18fb551f0 0x18f380000 + 8212976
11 UIKit 0x18f8850b8 0x18f380000 + 5263544
12 UIKit 0x18f885928 0x18f380000 + 5265704
13 UIKit 0x18ffee6e8 0x18f380000 + 13035240
14 UIKit 0x18ffee58c 0x18f380000 + 13034892
15 UIKit 0x18fd6a9c0 0x18f380000 + 10398144
16 UIKit 0x18fefffc8 0x18f380000 + 12058568
17 UIKit 0x18fd6a870 0x18f380000 + 10397808
18 UIKit 0x18fb54850 0x18f380000 + 8210512
19 UIKit 0x18f5f5e28 0x18f380000 + 2580008
20 UIKit 0x18f9f96ec 0x18f380000 + 6788844
21 FrontBoardServices 0x188621768 0x188615000 + 51048
22 FrontBoardServices 0x18862a070 0x188615000 + 86128
23 libdispatch.dylib 0x185905048 0x185904000 + 4168
24 libdispatch.dylib 0x18590c6c8 0x185904000 + 34504
25 FrontBoardServices 0x188655a04 0x188615000 + 264708
26 FrontBoardServices 0x1886556a8 0x188615000 + 263848
27 FrontBoardServices 0x188655c44 0x188615000 + 265284
28 CoreFoundation 0x185f28358 0x185e3e000 + 959320
29 CoreFoundation 0x185f282d8 0x185e3e000 + 959192
30 CoreFoundation 0x185f27b60 0x185e3e000 + 957280
31 CoreFoundation 0x185f25738 0x185e3e000 + 948024
32 CoreFoundation 0x185e462d8 0x185e3e000 + 33496
33 GraphicsServices 0x187cd7f84 0x187ccd000 + 44932
34 UIKit 0x18f3f3880 0x18f380000 + 473216
35 myApp 0x1046bc124 main (main.m:14)
36 libdyld.dylib 0x18596a56c 0x185969000 + 5484
So at the third line of the un-symbolicated crash report it says:
0x18d324df0 -[NSString stringByAppendingString:] + 112
and at the 4th line of the symbolicated crash report:
0x10469f928 -[AppDelegate initViewController] (AppDelegate.m:96)
In my AppDelegate at the 96 line I have this code:
NSString *backColorString = [#"#" stringByAppendingString:[myModel sharedInstance].theme.BackColor];
So the only thing that can be wrong with this, if the problem is indeed here(?) is that the
[HotelStay sharedInstance].theme.BackColor
must return nil or "".
The thing is that I tried both and I couldn't be able to recreate the problem. Is there something I am missing or doing wrong here?
if you use stringByAppendingString on an NSString than you end up with leaks because the pointer associated with the initial NSString moves around, pointing to the new string created by the append, whereas with NSMutableString, your pointer always points to that mutable string. I guess it should be the issue but what I am thinking is according to Apple Documentation The string to append to the receiver. This value must not be nil if its nil it will Raise a NSInvalidArgumentException.
I am writing a program using SpriteKit and UIKit.
I have two view controller in my program, first for main page and second for GameViewController (which includes GameScene). I have added a back button to the GameViewController which goes to main page (MainPageViewController). Everything works fine so far.
In my first page, when I wanted to go back again to GameViewController, program crashes and the following error is given:
GitarTelleri[959:47801] 15:21:39.405 ERROR:
AVAudioEngineGraph.mm:1743: _Connect: required condition is false:
!destNodeMixerConns.empty() && !isDestNodeConnectedToIONode 2016-09-19
15:21:39.413 GitarTelleri[959:47801] * Terminating app due to
uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required
condition is false: !destNodeMixerConns.empty() &&
!isDestNodeConnectedToIONode'
* First throw call stack: ( 0 CoreFoundation 0x0000000104250d85 exceptionPreprocess + 165 1 libobjc.A.dylib
0x00000001061d2deb objc_exception_throw + 48 2 CoreFoundation
0x0000000104250bea +[NSException raise:format:arguments:] + 106 3
libAVFAudio.dylib 0x000000010915eff3
_Z19AVAE_RaiseExceptionP8NSStringz + 176 4 libAVFAudio.dylib 0x0000000109171bc3
_ZN18AVAudioEngineGraph8_ConnectEP19AVAudioNodeImplBaseS1_jjP13AVAudioFormat
+ 1281 5 libAVFAudio.dylib 0x0000000109174df0 _ZN18AVAudioEngineGraph7ConnectEP11AVAudioNodeS1_mmP13AVAudioFormat + 322 6 libAVFAudio.dylib 0x00000001091a7a71
_ZN17AVAudioEngineImpl7ConnectEP11AVAudioNodeS1_mmP13AVAudioFormat + 301 7 libAVFAudio.dylib 0x00000001091a7ad8
-[AVAudioEngine connect:to:format:] + 83 8 AudioKit 0x00000001037a611b
_TTSf4n_d___TZFC8AudioKit8AudioKits6outputGSqCS_6AKNode_ + 267 9 GitarTelleri 0x000000010362c234
TFC12GitarTelleri18GameViewController13viewDidAppearfSbT + 196 10 GitarTelleri 0x000000010362c341
TToFC12GitarTelleri18GameViewController13viewDidAppearfSbT + 49 11 UIKit 0x0000000104df7335
-[UIViewController _setViewAppearState:isAnimating:] + 830 12 UIKit 0x0000000104e30589 -[UINavigationController viewDidAppear:] + 207 13
UIKit 0x0000000104df7335
-[UIViewController _setViewAppearState:isAnimating:] + 830 14 UIKit 0x0000000104df7cb8 -[UIViewController _endAppearanceTransition:] + 262
15 UIKit 0x0000000104dc208a
-[UIPresentationController transitionDidFinish:] + 827 16 UIKit 0x0000000104f9f38f -[_UICurrentContextPresentationController
transitionDidFinish:] + 42 17 UIKit
0x0000000104dc57c1 __56-[UIPresentationController
runTransitionForCurrentState]_block_invoke_2 + 183 18 UIKit
0x00000001056844c8 -[_UIViewControllerTransitionContext
completeTransition:] + 101 19 UIKit
0x0000000104dbef77 -[UITransitionView notifyDidCompleteTransition:] +
252 20 UIKit 0x0000000104dbec88
-[UITransitionView _didCompleteTransition:] + 1344 21 UIKit 0x0000000104dc13f4 -[UITransitionView _transitionDidStop:finished:] +
104 22 UIKit 0x0000000104ce47ff
-[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 241 23 UIKit 0x0000000104ce4bae
-[UIViewAnimationState animationDidStop:finished:] + 80 24 QuartzCore 0x0000000107d7d3c8
_ZN2CA5Layer23run_animation_callbacksEPv + 308 25 libdispatch.dylib 0x0000000108c773eb _dispatch_client_callout + 8 26 libdispatch.dylib
0x0000000108c5f1ef _dispatch_main_queue_callback_4CF + 1738 27
CoreFoundation 0x00000001041aa0f9
__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9 28 CoreFoundation 0x000000010416bb99 __CFRunLoopRun
+ 2073 29 CoreFoundation 0x000000010416b0f8 CFRunLoopRunSpecific + 488 30 GraphicsServices
0x000000010a189ad2 GSEventRunModal + 161 31 UIKit
0x0000000104c56f09 UIApplicationMain + 171 32 GitarTelleri
0x0000000103630372 main + 114 33 libdyld.dylib
0x0000000108cab92d start + 1 34 ???
0x0000000000000001 0x0 + 1 ) libc++abi.dylib: terminating with
uncaught exception of type NSException (lldb)
Should I change something in AppDelegate.swift or should I clean something when BackButton is clicked?
check your back button have AudioKit.stop()
I have an unwind segue which works fine in landscape or portrait on iOS 9.3, but throws the following exception if I rotate the device between presenting the target view controller (A) and the view controller performing the unwind (C).
Any ideas why this happens, and how to work around this problem?
A high level view of my storyboard:
The exception:
2016-03-28 16:58:14.194 ClarityLife[96444:11508887] *** Assertion failure in -[_UIStoryboardUnwindChain initFromSourceViewController:toDestinationViewController:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3512.60.7/UIStoryboardUnwindSegueTemplate.m:119
2016-03-28 16:58:14.202 ClarityLife[96444:11508887] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not unwind from <ClarityLife.VideoCallDisconnectingViewController: 0x7fdaa07c2b50> to <ClarityLife.VideoCallIdleViewController: 0x7fdaa2c13ab0> because a common ancestor could not be found. (Note that it is not supported to unwind from a view controller to one of its descendants.)'
*** First throw call stack:
(
0 CoreFoundation 0x000000011128bd85 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000113f92deb objc_exception_throw + 48
2 CoreFoundation 0x000000011128bbea +[NSException raise:format:arguments:] + 106
3 Foundation 0x0000000111e93d5a -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 198
4 UIKit 0x0000000113384c97 -[_UIStoryboardUnwindChain initFromSourceViewController:toDestinationViewController:] + 908
5 UIKit 0x0000000113385e49 -[UIStoryboardUnwindSegueTemplate newDefaultPerformHandlerForSegue:] + 125
6 UIKit 0x000000011315e395 -[UIStoryboardSegueTemplate segueWithDestinationViewController:] + 431
7 UIKit 0x00000001133865b7 -[UIStoryboardUnwindSegueTemplate segueWithDestinationViewController:] + 631
8 UIKit 0x00000001133868ae -[UIStoryboardUnwindSegueTemplate _performWithDestinationViewController:sender:] + 120
9 UIKit 0x0000000113386808 -[UIStoryboardUnwindSegueTemplate _perform:] + 86
10 UIKit 0x0000000112bb45f8 -[UIViewController performSegueWithIdentifier:sender:] + 99
11 ClarityLife 0x000000010fa6f9c5 _TFC11ClarityLife36VideoCallDisconnectingViewController13viewDidAppearfSbT_ + 261
12 ClarityLife 0x000000010fa6fa21 _TToFC11ClarityLife36VideoCallDisconnectingViewController13viewDidAppearfSbT_ + 49
13 UIKit 0x0000000112bb7335 -[UIViewController _setViewAppearState:isAnimating:] + 830
14 UIKit 0x0000000112bb7cb8 -[UIViewController _endAppearanceTransition:] + 262
15 UIKit 0x0000000112b8208a -[UIPresentationController transitionDidFinish:] + 827
16 UIKit 0x0000000112d5f38f -[_UICurrentContextPresentationController transitionDidFinish:] + 42
17 UIKit 0x0000000112b857c1 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke_2 + 183
18 UIKit 0x00000001134444c8 -[_UIViewControllerTransitionContext completeTransition:] + 101
19 UIKit 0x0000000112b7ef77 -[UITransitionView notifyDidCompleteTransition:] + 252
20 UIKit 0x0000000112b7ec88 -[UITransitionView _didCompleteTransition:] + 1344
21 UIKit 0x0000000112b813f4 -[UITransitionView _transitionDidStop:finished:] + 104
22 UIKit 0x0000000112aa47ff -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 241
23 UIKit 0x0000000112aa4bae -[UIViewAnimationState animationDidStop:finished:] + 80
24 QuartzCore 0x00000001128c93c8 _ZN2CA5Layer23run_animation_callbacksEPv + 308
25 libdispatch.dylib 0x00000001160393eb _dispatch_client_callout + 8
26 libdispatch.dylib 0x00000001160211ef _dispatch_main_queue_callback_4CF + 1738
27 CoreFoundation 0x00000001111e50f9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
28 CoreFoundation 0x00000001111a6b99 __CFRunLoopRun + 2073
29 CoreFoundation 0x00000001111a60f8 CFRunLoopRunSpecific + 488
30 GraphicsServices 0x0000000115ad5ad2 GSEventRunModal + 161
31 UIKit 0x0000000112a16f09 UIApplicationMain + 171
32 ClarityLife 0x000000010fa11432 main + 114
33 libdyld.dylib 0x000000011606d92d start + 1
34 ??? 0x0000000000000001 0x0 + 1
Resolved. The problem is in the app delegate method:
func splitViewController(splitViewController: UISplitViewController,
collapseSecondaryViewController secondaryViewController: UIViewController,
ontoPrimaryViewController primaryViewController: UIViewController) -> Bool {
...
return true
}
This method fell through to return true, which caused splitViewController to collapse the target view controller (A), which is the secondaryViewController, prior to the unwind. The solution is to ensure the secondary is not collapsed by returning false, thereby ensuring that the target of the unwind is available.
App crashing when pop two times the navigationController and in iPhone log return this error :(
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x6545f661
Triggered by Thread: 0
Thread 0 Crashed:
0 libobjc.A.dylib 0x3a081636 objc_msgSend + 22
1 UIKit 0x322bef20 -[UIScrollView(UIScrollViewInternal) _notifyDidScroll] + 60
2 UIKit 0x32039188 -[UIScrollView setContentOffset:] + 592
3 UIKit 0x320e61e6 -[UITableView setContentOffset:] + 346
4 UIKit 0x322bfe62 -[UIScrollView(UIScrollViewInternal) _adjustContentOffsetIfNecessary] + 1350
5 UIKit 0x320ebd0e -[UIScrollView(UIScrollViewInternal) _stopScrollingNotify:pin:tramplingDragFlags:] + 410
6 UIKit 0x320ebb66 -[UIScrollView(UIScrollViewInternal) _stopScrollingNotify:pin:] + 26
7 UIKit 0x320ebb22 -[UIScrollView removeFromSuperview] + 26
8 UIKit 0x3201a3b6 -[UIView dealloc] + 374
9 libobjc.A.dylib 0x3a0870d2 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 354
10 CoreFoundation 0x2f730c14 _CFAutoreleasePoolPop + 12
11 CoreFoundation 0x2f7c6176 __CFRunLoopRun + 1302
12 CoreFoundation 0x2f730eba CFRunLoopRunSpecific + 518
13 CoreFoundation 0x2f730c9e CFRunLoopRunInMode + 102
14 GraphicsServices 0x3468a65e GSEventRunModal + 134
15 UIKit 0x3207d148 UIApplicationMain + 1132
16 Big24H 0x000e9728 main (main.m:16)
17 libdyld.dylib 0x3a584ab4 start + 0
Looks like you have a UIScrollViewDelegate being deallocated before its corresponding UIScrollView and then getting called.
You didn't provide any code so the best I can say is you need to find where it is and nil it out when it is getting deallocated.
Probably something like this:
- (void) dealloc
{
myScrollView.delegate = nil;
}