我正面临一个与CoreData相关的奇怪崩溃。
我正在使用RestKit2，它在mainMOC和persistentMOC之间具有父子关系。 似乎导致崩溃（但几乎不可重现）的是将新实体存储到CoreData中（使用mainMOC），然后尝试检索与先前存储的实体有关系的对象（再次使用主MOC）。
堆栈跟踪不包含任何来自我的代码的指示。在合并这两种情况时似乎有些可疑。 iOS7和iOS8以及设备和模拟器都会发生崩溃。
有人有这方面的经验吗？
2014-10-15 11:25:56.208 MyApplication[77240:14758953] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'The left hand side for an ALL or ANY operator must be either an NSArray or an NSSet.'
*** First throw call stack:
(
0 CoreFoundation 0x04e97df6 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x04b21a97 objc_exception_throw + 44
2 Foundation 0x04179816 -[NSEqualityPredicateOperator performPrimitiveOperationUsingObject:andObject:] + 0
3 Foundation 0x04178b05 -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 345
4 Foundation 0x0426e387 -[NSSubqueryExpression expressionValueWithObject:context:] + 627
5 Foundation 0x04178c8c -[NSFunctionExpression expressionValueWithObject:context:] + 231
6 Foundation 0x04178aa2 -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 246
7 Foundation 0x041a9776 -[NSCompoundPredicateOperator evaluatePredicates:withObject:substitutionVariables:] + 254
8 Foundation 0x041a95ec -[NSCompoundPredicate evaluateWithObject:substitutionVariables:] + 292
9 Foundation 0x041a9776 -[NSCompoundPredicateOperator evaluatePredicates:withObject:substitutionVariables:] + 254
10 Foundation 0x041a95ec -[NSCompoundPredicate evaluateWithObject:substitutionVariables:] + 292
11 Foundation 0x041789a4 -[NSPredicate evaluateWithObject:] + 48
12 CoreData 0x048d836d -[NSFetchedResultsController(PrivateMethods) _objectInResults:] + 109
13 CoreData 0x048d9d10 -[NSFetchedResultsController(PrivateMethods) _preprocessUpdatedObjects:insertsInfo:deletesInfo:updatesInfo:sectionsWithDeletes:newSectionNames:treatAsRefreshes:] + 672
14 CoreData 0x048db28a __77-[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:]_block_invoke + 1946
15 CoreData 0x047e8454 developerSubmittedBlockToNSManagedObjectContextPerform + 196
16 CoreData 0x047e8337 -[NSManagedObjectContext performBlockAndWait:] + 231
17 CoreData 0x048daacf -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 127
18 Foundation 0x0411b929 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke + 40
19 CoreFoundation 0x04e62974 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
20 CoreFoundation 0x04d5061b _CFXNotificationPost + 3051
21 Foundation 0x0410af26 -[NSNotificationCenter postNotificationName:object:userInfo:] + 98
22 CoreData 0x047c94d3 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 83
23 CoreData 0x0486954f -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 367
24 CoreData 0x047c4d78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _postRefreshedObjectsNotificationAndClearList] + 136
25 CoreData 0x047c483b -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 4875
26 CoreData 0x047c3516 -[NSManagedObjectContext processPendingChanges] + 54
27 CoreData 0x047969d7 _performRunLoopAction + 327
28 CoreFoundation 0x04dbafbe __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
29 CoreFoundation 0x04dbaf00 __CFRunLoopDoObservers + 400
30 CoreFoundation 0x04db093a __CFRunLoopRun + 1226
31 CoreFoundation 0x04db01ab CFRunLoopRunSpecific + 443
32 CoreFoundation 0x04daffdb CFRunLoopRunInMode + 123
33 GraphicsServices 0x05e4224f GSEventRunModal + 192
34 GraphicsServices 0x05e4208c GSEventRun + 104
35 UIKit 0x02f56e16 UIApplicationMain + 1526
36 MyApplication 0x000a9e04 main + 164
37 libdyld.dylib 0x06483ac9 start + 1
)