iOS HELP! *** Terminating app due to uncaught exception 'NSUnknownKeyException'

[rwaller1]

Ok guys,

I need some help, I am using Xcode 5.0 and developing for iOS 7.0. I am getting this error and it won't open my app in the Simulator.

AssertMacros: queueEntry, file: /SourceCache/IOKitUser_Sim/IOKitUser-920.1.11/hid.subproj/IOHIDEventQueue.c, line: 512
2013-09-03 22:15:25.999 Gamer Trivia[645:a0b] Flurry: Starting session on Agent Version [Flurry_iOS_118_4.2.3]
2013-09-03 22:15:29.266 Gamer Trivia[645:a0b] [TJLog level: 4] Tapjoy Request: https://connect.tapjoy.com/connect?...1.0.3&device_location=true&device_name=x86_64
2013-09-03 22:15:29.716 Gamer Trivia[645:a0b] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<MainMenuViewController 0xe1a3230> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key btnRestore.'
*** First throw call stack:
(
0 CoreFoundation 0x058d16f4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x030f88b6 objc_exception_throw + 44
2 CoreFoundation 0x05961721 -[NSException raise] + 17
3 Foundation 0x0284ce7e -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 282
4 Foundation 0x027b918b _NSSetUsingKeyValueSetter + 88
5 Foundation 0x027b86e3 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 267
6 Foundation 0x0281ab9a -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 412
7 UIKit 0x01ba3265 -[UIRuntimeOutletConnection connect] + 106
8 libobjc.A.dylib 0x0310a7d2 -[NSObject performSelector:] + 62
9 CoreFoundation 0x058ccc7a -[NSArray makeObjectsPerformSelector:] + 314
10 UIKit 0x01ba1dbe -[UINib instantiateWithOwnerptions:] + 1417
11 UIKit 0x01a14f05 -[UIViewController _loadViewFromNibNamed:bundle:] + 280
12 UIKit 0x01a156ad -[UIViewController loadView] + 302
13 UIKit 0x01a159ae -[UIViewController loadViewIfRequired] + 78
14 UIKit 0x01a15eb4 -[UIViewController view] + 35
15 UIKit 0x0193f6fd -[UIWindow addRootViewControllerViewIfPossible] + 66
16 UIKit 0x0193fa97 -[UIWindow _setHidden:forced:] + 312
17 UIKit 0x0193fd2d -[UIWindow _orderFrontWithoutMakingKey] + 49
18 UIKit 0x0194a562 -[UIWindow makeKeyAndVisible] + 65
19 Gamer Trivia 0x00008877 -[RTAppDelegate application:didFinishLaunchingWithOptions:] + 1095
20 UIKit 0x018fd525 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 309
21 UIKit 0x018fdd65 -[UIApplication _callInitializationDelegatesForURLayload:suspended:] + 1536
22 UIKit 0x01902578 -[UIApplication _runWithURLayload:launchOrientation:statusBarStyle:statusBarHidden:] + 824
23 UIKit 0x0191657c -[UIApplication handleEvent:withNewEvent:] + 3447
24 UIKit 0x01916ae9 -[UIApplication sendEvent:] + 85
25 UIKit 0x019041f5 _UIApplicationHandleEvent + 736
26 GraphicsServices 0x05ca033b _PurpleEventCallback + 776
27 GraphicsServices 0x05c9fe46 PurpleEventCallback + 46
28 CoreFoundation 0x0584ce95 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
29 CoreFoundation 0x0584cbcb __CFRunLoopDoSource1 + 523
30 CoreFoundation 0x058778ac __CFRunLoopRun + 2156
31 CoreFoundation 0x05876bf3 CFRunLoopRunSpecific + 467
32 CoreFoundation 0x05876a0b CFRunLoopRunInMode + 123
33 UIKit 0x01901cad -[UIApplication _run] + 840
34 UIKit 0x01903f0b UIApplicationMain + 1225
35 Gamer Trivia 0x000083fd main + 141
36 libdyld.dylib 0x067cd725 start + 0
37 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

 

[Scott90]

Looks like you used to have a button in your storyboard called btnRestore, and connected this to an outlet. Then you deleted the button, but the connection was still there. Look at the connections for that view controller, and delete any that you don't need anymore, or that don't exist anymore.

 

[rwaller1]

Ok

Looks like you used to have a button in your storyboard called btnRestore, and connected this to an outlet. Then you deleted the button, but the connection was still there. Look at the connections for that view controller, and delete any that you don't need anymore, or that don't exist anymore.

I will see if I can find it! Thanks so much!

 

[Duncan C]

I will see if I can find it! Thanks so much!

Note that these broken connections are defined in IB (Interface Builder). Go through your XIB files or storyboards. Select the view controller (or "File's owner" as it's called in XIB files) and choose the connections inspector. Look for IBOutlet links that use the name listed in your error message.

If you have an IBOutlet linked in IB, be aware that if you delete the outlet in code, or rename it, it leaves a broken link that causes this error at runtime.

The "refactor" command in XCode can rename outlets and rename the IBOutlet Link in IB all in one step. Get in the habit of using Refactor to rename outlets and actions.

 

[ArtOfWarfare]

The "refactor" command in XCode can rename outlets and rename the IBOutlet Link in IB all in one step. Get in the habit of using Refactor to rename outlets and actions.

Cool - it didn't occur to me that refactor would deal with this.