On 22 Dec 2009, at 13:38, Graham Cox wrote:
>
> On 22/12/2009, at 4:05 PM, Gerriet M. Denkmann wrote:
>
>> When later I reset the filterPredicates back to the simple (working) mode, I
>> get another exception:
>> HIToolbox: ignoring exception 'Cannot remove an observer <arrayController1>
>> for the key path "theBs.bValue" from <A-entity 0x114f02a10> because it is
>> not registered as an observer.' that raised inside Carbon event dispatch
>>
>> 1. This is a Cocoa document based app, using Core Data. Why this "Carbon
>> event dispatch". And who is HIToolbox?
>
>
> Cocoa sits atop Carbon. So all this means is that an exception didn't get
> caught until it reached the Carbon layers. I don't think such exceptions were
> previously logged before 10.6, though they undoubtedly did occur.
>
> You need to concentrate on where the exception came from and stop it from
> being raised, not where it ended up getting caught.
Sigh - I had hoped that this Carbon-message would indicate the source of the
problem - obviously I was wrong.
The backtrace for the first exception '[<_NSFaultingMutableSet 0x10048a950>
addObserver:forKeyPath:options:context:] is not supported. Key path: bValue'
when setting the predicate 'aValue BEGINSWITH[n] "a" AND ANY theBs.bValue ==
"xx"' is:
0 CoreFoundation 0x00007fff80b73444
__exceptionPreprocess + 180
1 libobjc.A.dylib 0x00007fff854630f3
objc_exception_throw + 45
2 CoreFoundation 0x00007fff80b73267
+[NSException raise:format:arguments:] + 103
3 CoreFoundation 0x00007fff80b731f4
+[NSException raise:format:] + 148
4 Foundation 0x00007fff8343480e
-[NSSet(NSKeyValueObserverRegistration)
addObserver:forKeyPath:options:context:] + 116
5 Foundation 0x00007fff8335b16d
-[NSKeyValueNestedProperty object:didAddObservance:recurse:] + 229
6 Foundation 0x00007fff83359f3b
-[NSObject(NSKeyValueObserverRegistration)
_addObserver:forProperty:options:context:] + 511
7 Foundation 0x00007fff833588e0
-[NSObject(NSKeyValueObserverRegistration)
addObserver:forKeyPath:options:context:] + 125
8 AppKit 0x00007fff8267d92c
-[_NSModelObservingTracker
_registerOrUnregister:observerNotificationsForKeyPath:] + 273
9 AppKit 0x00007fff82b4c269
-[_NSModelObservingTracker registerModelKeyPaths:unregisterModelKeyPaths:] + 421
10 AppKit 0x00007fff82715d35
-[NSArrayController _updateAutomaticRearrangementKeysPaths] + 240
11 AppKit 0x00007fff8271e5da
-[NSArrayController _didChangeArrangementCriteriaWithOperationsMask:useBasis:]
+ 79
12 AppKit 0x00007fff8271e18d
-[NSArrayController setFilterPredicate:] + 1344
13 ไทย Dict Both 3 0x0000000100004d8e
-[MyDocument(MyDocumentPrivate) newFilters] + 1473
but there is nothing here what helps me answering why the exception was raised
(although it answers where it came from).
Kind regards,
Gerriet.
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