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I am facing this strange issue from few hours and it started suddenly. Whenever I try to select different tab in color panel in Xcode,the whole Xcode crashes with the error,
UNCAUGHT EXCEPTION (NSRangeException): Cannot remove an observer <NSColorPickerPageableNameListScrollView 0x7fb8f6ce0910> for the key path "contentLayoutRect" from <HighlightColorPanel 0x7fb8f6c94af0> because it is not registered as an observer.
Following is the full stack trace for error,
Process: Xcode [1958]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 6.3.2 (7718)
Build Info: IDEFrameworks-7718000000000000~2
App Item ID: 497799835
App External ID: 812404257
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Xcode [1958]
User ID: 501
Date/Time: 2015-06-20 13:50:18.080 +0530
OS Version: Mac OS X 10.10.3 (14D136)
Report Version: 11
Anonymous UUID: 1A8B5EF9-7E79-106C-D0F5-5648FF5FD699
Time Awake Since Boot: 6500 seconds
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
ProductBuildVersion: 6D2105
UNCAUGHT EXCEPTION (NSRangeException): Cannot remove an observer <NSColorPickerPageableNameListScrollView 0x7fb8f6ce0910> for the key path "contentLayoutRect" from <HighlightColorPanel 0x7fb8f6c94af0> because it is not registered as an observer.
UserInfo: (null)
Hints: None
Backtrace:
0 0x00007fff8a22e024 __exceptionPreprocess (in CoreFoundation)
1 0x0000000104b5abb4 DVTFailureHintExceptionPreprocessor (in DVTFoundation)
2 0x00007fff8839f76e objc_exception_throw (in libobjc.A.dylib)
3 0x00007fff8a22deed +[NSException raise:format:] (in CoreFoundation)
4 0x00007fff89de0896 -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] (in Foundation)
5 0x00007fff89de05d9 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] (in Foundation)
6 0x00007fff89de04a4 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:context:] (in Foundation)
7 0x00007fff8ae8f09b -[NSScrollView _setWindow:] (in AppKit)
8 0x00007fff8a14d705 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke (in CoreFoundation)
9 0x00007fff8a14ce09 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] (in CoreFoundation)
10 0x00007fff8b535474 __21-[NSView _setWindow:]_block_invoke735 (in AppKit)
11 0x00007fff89e013be -[NSISEngine withBehaviors:performModifications:] (in Foundation)
12 0x00007fff8adb1c54 -[NSView _setWindow:] (in AppKit)
13 0x00007fff8ade9091 -[NSView removeFromSuperview] (in AppKit)
14 0x00007fff8b280034 -[NSColorPanel _switchToPicker:] (in AppKit)
15 0x00007fff8b0ee1b1 -[NSToolbarButton sendAction:to:] (in AppKit)
16 0x00007fff8afdef5a -[NSToolbarItemViewer mouseDown:] (in AppKit)
17 0x00007fff8b54f2fc -[NSWindow _reallySendEvent:isDelayedEvent:] (in AppKit)
18 0x00007fff8aeded76 -[NSWindow sendEvent:] (in AppKit)
19 0x00007fff8aedb312 -[NSApplication sendEvent:] (in AppKit)
20 0x0000000105bd8c14 -[IDEApplication sendEvent:] (in IDEKit)
21 0x00007fff8ae04c68 -[NSApplication run] (in AppKit)
22 0x00007fff8ad81354 NSApplicationMain (in AppKit)
23 0x00007fff952435c9 start (in libdyld.dylib)
24 0x0000000000000001
abort() called
Application Specific Signatures:
NSRangeException
Application Specific Backtrace 1:
0 CoreFoundation 0x00007fff8a22e03c __exceptionPreprocess + 172
1 DVTFoundation 0x0000000104b5abb4 DVTFailureHintExceptionPreprocessor + 194
2 libobjc.A.dylib 0x00007fff8839f76e objc_exception_throw + 43
3 CoreFoundation 0x00007fff8a22deed +[NSException raise:format:] + 205
4 Foundation 0x00007fff89de0896 -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] + 604
5 Foundation 0x00007fff89de05d9 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] + 114
6 Foundation 0x00007fff89de04a4 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:context:] + 253
7 AppKit 0x00007fff8ae8f09b -[NSScrollView _setWindow:] + 342
8 CoreFoundation 0x00007fff8a14d705 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 133
9 CoreFoundation 0x00007fff8a14ce09 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 313
10 AppKit 0x00007fff8b535474 __21-[NSView _setWindow:]_block_invoke735 + 169
11 Foundation 0x00007fff89e013be -[NSISEngine withBehaviors:performModifications:] + 155
12 AppKit 0x00007fff8adb1c54 -[NSView _setWindow:] + 3191
13 AppKit 0x00007fff8ade9091 -[NSView removeFromSuperview] + 453
14 AppKit 0x00007fff8b280034 -[NSColorPanel _switchToPicker:] + 231
15 AppKit 0x00007fff8b0ee1b1 -[NSToolbarButton sendAction:to:] + 75
16 AppKit 0x00007fff8afdef5a -[NSToolbarItemViewer mouseDown:] + 4981
17 AppKit 0x00007fff8b54f2fc -[NSWindow _reallySendEvent:isDelayedEvent:] + 14125
18 AppKit 0x00007fff8aeded76 -[NSWindow sendEvent:] + 470
19 AppKit 0x00007fff8aedb312 -[NSApplication sendEvent:] + 2504
20 IDEKit 0x0000000105bd8c14 -[IDEApplication sendEvent:] + 924
21 AppKit 0x00007fff8ae04c68 -[NSApplication run] + 711
22 AppKit 0x00007fff8ad81354 NSApplicationMain + 1832
23 libdyld.dylib 0x00007fff952435c9 start + 1
24 ??? 0x0000000000000001 0x0 + 1
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff8f7c7286 __pthread_kill + 10
1 libsystem_c.dylib 0x00007fff85fb6b53 abort + 129
2 com.apple.dt.IDEKit 0x0000000105e09753 +[IDEAssertionHandler _handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 1507
3 com.apple.dt.IDEKit 0x0000000105e0a9c8 -[IDEAssertionHandler handleUncaughtException:] + 1077
4 com.apple.dt.IDEKit 0x0000000105e0aa94 IDEHandleUncaughtException + 94
5 com.apple.AppKit 0x00007fff8ae04d1c -[NSApplication run] + 891
6 com.apple.AppKit 0x00007fff8ad81354 NSApplicationMain + 1832
7 libdyld.dylib 0x00007fff952435c9 start + 1
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff8f7c8232 kevent64 + 10
1 libdispatch.dylib 0x00007fff92c90a6a _dispatch_mgr_thread + 52
Thread 2:
0 libsystem_kernel.dylib 0x00007fff8f7c794a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff8d7cb40d start_wqthread + 13
Thread 3:
0 libsystem_kernel.dylib 0x00007fff8f7c794a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff8d7cb40d start_wqthread + 13
Thread 4:
0 libsystem_kernel.dylib 0x00007fff8f7c794a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff8d7cb40d start_wqthread + 13
Thread 5:
0 libsystem_kernel.dylib 0x00007fff8f7c24de mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff8f7c164f mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8a13ceb4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8a13c37b __CFRunLoopRun + 1371
4 com.apple.CoreFoundation 0x00007fff8a13bbd8 CFRunLoopRunSpecific + 296
5 com.apple.Foundation 0x00007fff89e28a59 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 278
6 com.apple.DTDeviceKitBase 0x000000010f108f3c -[DTDKRemoteDeviceDataListener listenerThreadImplementation] + 974
7 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
8 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
9 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
10 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 6:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x00007fff8f7c73fa __select + 10
1 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
2 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
3 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 7:: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x00007fff8f7c24de mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff8f7c164f mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8a13ceb4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8a13c37b __CFRunLoopRun + 1371
4 com.apple.CoreFoundation 0x00007fff8a13bbd8 CFRunLoopRunSpecific + 296
5 com.apple.CFNetwork 0x00007fff8600f220 +[NSURLConnection(Loader) _resourceLoadLoop:] + 434
6 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
7 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
8 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
9 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 8:
0 libsystem_kernel.dylib 0x00007fff8f7c24de mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff8f7c164f mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8a13ceb4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8a13c37b __CFRunLoopRun + 1371
4 com.apple.CoreFoundation 0x00007fff8a13bbd8 CFRunLoopRunSpecific + 296
5 com.apple.AppKit 0x00007fff8aed766b _NSEventThread + 137
6 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
7 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
8 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 9:: DYMobileDeviceManager
0 libsystem_kernel.dylib 0x00007fff8f7c24de mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff8f7c164f mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8a13ceb4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8a13c37b __CFRunLoopRun + 1371
4 com.apple.CoreFoundation 0x00007fff8a13bbd8 CFRunLoopRunSpecific + 296
5 com.apple.Foundation 0x00007fff89e28a59 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 278
6 com.apple.Foundation 0x00007fff89e9e17f -[NSRunLoop(NSRunLoop) run] + 74
7 com.apple.GPUToolsMobileFoundation 0x00000001175d789b -[DYMobileDeviceManager _deviceNotificationThread:] + 134
8 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
9 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
10 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
11 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 10:
0 libsystem_kernel.dylib 0x00007fff8f7c794a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff8d7cb40d start_wqthread + 13
Thread 11:
0 libsystem_kernel.dylib 0x00007fff8f7c794a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff8d7cb40d start_wqthread + 13
Thread 12:
0 libsystem_kernel.dylib 0x00007fff8f7c7136 __psynch_cvwait + 10
1 com.apple.Xcode.DevToolsCore 0x000000010eb59866 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 456
2 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
3 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
4 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
5 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 13:
0 libsystem_kernel.dylib 0x00007fff8f7c7136 __psynch_cvwait + 10
1 com.apple.Xcode.DevToolsCore 0x000000010eb59866 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 456
2 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
3 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
4 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
5 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 14:
0 libsystem_kernel.dylib 0x00007fff8f7c7136 __psynch_cvwait + 10
1 com.apple.Xcode.DevToolsCore 0x000000010eb59866 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 456
2 com.apple.Foundation 0x00007fff89dd6dc2 __NSThread__main__ + 1345
3 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
4 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
5 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 15:
0 libsystem_kernel.dylib 0x00007fff8f7c24de mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff8f7c164f mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff8a13ceb4 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff8a13c37b __CFRunLoopRun + 1371
4 com.apple.CoreFoundation 0x00007fff8a13bbd8 CFRunLoopRunSpecific + 296
5 com.apple.CoreFoundation 0x00007fff8a1f3671 CFRunLoopRun + 97
6 com.apple.DebugSymbols 0x00007fff8ace1b8f SpotlightQueryThread(void*) + 463
7 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
8 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
9 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 16:
0 libsystem_kernel.dylib 0x00007fff8f7c748a __semwait_signal + 10
1 com.apple.CoreSymbolication 0x00007fff882dbe67 0x7fff882c9000 + 77415
2 libsystem_pthread.dylib 0x00007fff8d7cd268 _pthread_body + 131
3 libsystem_pthread.dylib 0x00007fff8d7cd1e5 _pthread_start + 176
4 libsystem_pthread.dylib 0x00007fff8d7cb41d thread_start + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007fff5b27e948 rdx: 0x0000000000000000
rdi: 0x000000000000130f rsi: 0x0000000000000006 rbp: 0x00007fff5b27e970 rsp: 0x00007fff5b27e948
r8: 0x0000000000001fff r9: 0x00007fb8f3c38f60 r10: 0x0000000008000000 r11: 0x0000000000000206
r12: 0x00007fff8839a440 r13: 0x00007fb8f3eb68c0 r14: 0x00007fff77741300 r15: 0x00007fb8f3c23f00
rip: 0x00007fff8f7c7286 rfl: 0x0000000000000206 cr2: 0x00000001075f70e0
Logical CPU: 0
Error Code: 0x020000b8
Trap Number: 133
Thank you very much in advance.
659
In my case exactly the same issue was caused by ColorSenseRainbow plugin I installed via Alcatraz. As soon as I removed it, everything went back to normal.
154
This seems like an issue on Apple's part. Let me digest that log for you:
UNCAUGHT EXCEPTION: Cannot remove an observer <NSColorPickerPageableNameListScrollView 0x7fb8f6ce0910> for the key path "contentLayoutRect" from <HighlightColorPanel 0x7fb8f6c94af0> because it is not registered as an observer.
So, in the code for Xcode, what it's trying to do is remove the observer that is of type NSColorPickerPagableNameListScrollView (the up/down list that selects a dev's color preferences in IB) at memory address 0x7b7f6ce0910 from the HighlightColorPanel (possibly the dialog that's a color picker) at memory address 0x7fb8f6c94af0 before the scroll view registered as an observer of the color picker for the key path contentLayoutRect.
In layman's terms, the scrolling color view is an observer of the color picker, which makes seeing your color preferences easier. When the color picker selects a color, it sends a notification to its observer, the scrolling color box.
However, when the box is closed, the scroll view should remove itself from the observer tree, that is, the listing of items that are observers of the box, in an effort to get rid of (and deallocate resources for) the box.
The bug exists in just that part of the code, since, apparently, the scroll view never registered as an observer for the key path contentLayoutRect. It was an observer for everything else but that. Since it couldn't tell what the observer was when it tried to get rid of it, the system derped and crashed.
34
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