I've never had to read a crash log before so I'm admittedly a n00b in these waters.
I can tell there was an EXC_BAD_ACCESS. How can I tell which object was released before it was supposed to be?
*note this happens after waking the device while the app is active. It doesn't always happen, but often enough.
** EDIT **
A symbolicated crash log:
Incident Identifier: 14FFD847-61CB-435B-9E98-C06B3B661429
CrashReporter Key: 7c5fd78cf04b38cfd2aa153f61eb1655ed671274
Hardware Model: iPhone4,1
Process: My iPhone App [2599]
Path: /var/mobile/Applications/ABAB96ED-A203-48A5-8B50-B34BA3A8E4A4/My iPhone App.app/My iPhone App
Identifier: My iPhone App
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2012-07-01 22:17:43.458 -0600
OS Version: iPhone OS 5.1 (9B179)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xb4f05bbe
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x35a65f7e objc_msgSend + 22
1 UIKit 0x33c31042 -[UIImageView isAnimating] + 130
2 UIKit 0x33c3b100 -[UIImageView stopAnimating] + 96
3 UIKit 0x33d5d1de -[UIActivityIndicatorView _tearDownAnimation] + 30
4 UIKit 0x33cdb972 -[UIActivityIndicatorView _applicationDidEnterBackground:] + 34
5 Foundation 0x37d8f4f8 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 + 12
6 CoreFoundation 0x37531540 ___CFXNotificationPost_block_invoke_0 + 64
7 CoreFoundation 0x374bd090 _CFXNotificationPost + 1400
8 Foundation 0x37d033e4 -[NSNotificationCenter postNotificationName:object:userInfo:] + 60
9 UIKit 0x33c813f6 -[UIApplication _handleApplicationSuspend:eventInfo:] + 786
10 UIKit 0x33c120a0 -[UIApplication handleEvent:withNewEvent:] + 2088
11 UIKit 0x33c11708 -[UIApplication sendEvent:] + 48
12 UIKit 0x33c110dc _UIApplicationHandleEvent + 5820
13 GraphicsServices 0x323c9224 PurpleEventCallback + 876
14 CoreFoundation 0x3753951c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
15 CoreFoundation 0x375394be __CFRunLoopDoSource1 + 134
16 CoreFoundation 0x3753830c __CFRunLoopRun + 1364
17 CoreFoundation 0x374bb49e CFRunLoopRunSpecific + 294
18 CoreFoundation 0x374bb366 CFRunLoopRunInMode + 98
19 GraphicsServices 0x323c8432 GSEventRunModal + 130
20 UIKit 0x33c3fe76 UIApplicationMain + 1074
21 My iPhone App 0x000f7ec2 0xdc000 + 114370
22 My iPhone App 0x000ddc50 0xdc000 + 7248
It needs to be symbolicated. Take a look at this post, it should help.