ios4.1 of a crash

NSInvalidArgumentException
- [UIApplication applicationWillTerminate:]: unrecognized selector sent to instance 0x552660
0 CoreFoundation 0x31785fd3 __ exceptionPreprocess 114
1 libobjc.A.dylib 0x320118a5 objc_exception_throw 24
2 CoreFoundation 0x31789a77 - [NSObject (NSObject) doesNotRecognizeSelector:] 102
3 CoreFoundation 0x31788f15 ___ forwarding___ 508
4 CoreFoundation 0x3171b680 _CF_forwarding_prep_0 48
5 default 0x1468e28d - [CommonToolsView onClickCellBtn:] 104
6 CoreFoundation 0x317107ad - [NSObject (NSObject) performSelector: withObject: withObject:] 24
7 UIKit 0x3017a829 - [UIApplication sendAction: to: from: forEvent:] 84
8 UIKit 0x3017a7c9 - [UIApplication sendAction: toTarget: fromSender: forEvent:] 32
9 UIKit 0x3017a79b - [UIControl sendAction: to: forEvent:] 38
10 UIKit 0x3017a4ed - [UIControl (Internal) _sendActionsForEvents: withEvent:] 356
11 UIKit 0x3017ab3b - [UIControl touchesEnded: withEvent:] 342
12 UIKit 0x30172b89 _UIGestureRecognizerUpdateObserver 2904
13 CoreFoundation 0x3175ba49 __ CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 16
14 CoreFoundation 0x3175d475 __ CFRunLoopDoObservers 412
15 CoreFoundation 0x3175e77b __ CFRunLoopRun 854
16 CoreFoundation 0x317078eb CFRunLoopRunSpecific 230
17 CoreFoundation 0x317077f3 CFRunLoopRunInMode 58
18 GraphicsServices 0x33ac26ef GSEventRunModal 114
19 GraphicsServices 0x33ac279b GSEventRun 62
20 UIKit 0x3011e2a7 - [UIApplication _run] 402
21 UIKit 0x3011ce17 UIApplicationMain 670

These are ios4.1 system reported a crash , is there any experts encountered this problem or have related ideas , tired advertised, be grateful.
( other system basically no such problem ; program useless to CommonToolsView)
------ Solution --------------------- -----------------------
unrecognized selector sent to instance is not the method name
this problem in the debug environment, it is easy to see that it is NOT true cause
------ Solution ------------------- -------------------------
[CommonToolsView onClickCellBtn:]
global search to see where this method is called to see if there might find clues
------ Solution ----------------- ---------------------------
CommonTools which is 91 desktop database , the user installed 91 desktop, in 4.x devices possible through "Exit current program " to exit the current program exits , it will produce a top crash log, is 91 desktop bug
------ For reference only ---------------------------------------
you get what causes it crashes it !
------ For reference only -------------------------------------- -
I am a landlord . Unable to reproduce in the debug environment , unknown operation . This is the crash stack upload information . Even suspect that is not third-party software ( may jailbreak installed ) cause , no clue.
------ For reference only -------------------------------------- -
NSInvalidArgumentException
- [UIApplication applicationWillTerminate:]: unrecognized selector sent to instance 0x552660

look at this log, it should be when the program exits , call applicationWillTerminate: method is not found.
------ For reference only -------------------------------------- -



unable to reproduce in the debug environment , unknown operation .
more try , still unable to reproduce ?
------ For reference only ------------------------ ---------------
Thank you, after six months , and finally someone said that 91 desktop problem, haha.