App fails on Yosemite - "Cannot remove an observer"
App fails on Yosemite - "Cannot remove an observer"
- Subject: App fails on Yosemite - "Cannot remove an observer"
- From: Andreas Höschler <email@hidden>
- Date: Sat, 29 Nov 2014 21:27:35 +0100
Hi all,
we just tried one of our apps - doing fine on earlier versions of MacOSX - on Yosemite. When clicking on a tab of a NSTabView we get the following on the console and the app stops working (exception not caught):
29/11/14 21:21:23,496 SOSmartBrowser[731]: Cannot remove an observer <GSScrollView 0x7d706e60> for the key path "contentLayoutRect" from <GSWindow 0x7d71cf50> because it is not registered as an observer.
29/11/14 21:21:23,499 SOSmartBrowser[731]: (
0 CoreFoundation 0x9256c343 __raiseError + 195
1 libobjc.A.dylib 0x98481a2a objc_exception_throw + 276
2 CoreFoundation 0x9256c25d +[NSException raise:format:] + 141
3 Foundation 0x99f65b18 -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] + 739
4 Foundation 0x99f65787 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] + 189
5 Foundation 0x99f76919 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:context:] + 389
6 AppKit 0x9039c0af -[NSScrollView _setWindow:] + 429
7 AppKit 0x9037fe1e __21-[NSView _setWindow:]_block_invoke_2 + 52
8 CoreFoundation 0x9247bc3b __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 107
9 CoreFoundation 0x9247b27a -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 282
10 CoreFoundation 0x9247b0d5 -[NSArray enumerateObjectsUsingBlock:] + 53
11 AppKit 0x90afdca4 __21-[NSView _setWindow:]_block_invoke746 + 158
12 AppKit 0x9035afd5 -[NSView(NSConstraintBasedLayout) _withAutomaticEngineOptimizationDisabled:] + 111
13 AppKit 0x9035c91d -[NSView _setWindow:] + 2978
14 AppKit 0x90359e6f -[NSView addSubview:] + 453
15 AppKit 0x90359bb7 -[NSView replaceSubview:with:] + 152
16 AppKit 0x90621a4d -[NSTabView _switchTabViewItem:oldView:withTabViewItem:newView:initialFirstResponder:lastKeyView:] + 992
17 AppKit 0x906212d7 -[NSTabView selectTabViewItem:] + 568
18 AppKit 0x90a072ce -[NSTabView mouseDown:] + 166
19 AppKit 0x90b24c24 -[NSWindow _reallySendEvent:] + 12353
20 AppKit 0x9050dfb9 -[NSWindow sendEvent:] + 409
21 AppKit 0x904bba27 -[NSApplication sendEvent:] + 4679
22 AppKit 0x90335e0c -[NSApplication run] + 1003
23 AppKit 0x9031f310 NSApplicationMain + 2082
24 libdyld.dylib 0x98c466d9 start + 1
25 ??? 0x00000002 0x0 + 2
)
I am rather clueless since the exception is raised in Apples code!? What in our GSScrollView (NSScrollView) and GSWindow (NSWindow) subclasses could cause this problem on Yosemite? Or is this a known MacOSX Yosemite bug? Anyone encountered the same problem?
Thanks a lot,
Andreas
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden