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Hello all,I've update to Xcode Version 7.1 beta (7B75) and have suddenly a problem with a fetch request (line 10).class func getObjects<T: NSManagedObject>(predicate: NSPredicate?, sortKey: String? = nil, sortAscending: Bool? = true) throws -> [T]? { let entityName = T.entityName() let fetchRequest = NSFetchRequest(entityName: entityName) if sortKey != nil { fetchRequest.sortDescriptors = [NSSortDescriptor(key: sortKey!, ascending: sortAscending!)] } if predicate != nil { fetchRequest.predicate = predicate } let fetchedResults = try? MPAppDelegate.moc.executeFetchRequest(fetchRequest) return fetchedResults as? [T] } }Previously (iOS 9, Xcode 7), the fetch request worked without problems, even with passing a computed property as the sortKey.Now, an unhandled exception is thrown (even with a do-catch block):2015-10-01 15:35:32.775 My People[34759:527829] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'keypath displayName not found in entity <NSSQLEntity MPContactEntry id=1>' *** First throw call stack: ( 0 CoreFoundation 0x00000001107d4f45 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x00000001124f0deb objc_exception_throw + 48 2 CoreData 0x000000011042e82f -[NSSQLGenerator newSQLStatementForRequest:ignoreInheritance:countOnly:nestingLevel:nestIsWhereScoped:] + 1583 3 CoreData 0x0000000110321c43 -[NSSQLGenerator newSQLStatementForFetchRequest:ignoreInheritance:countOnly:nestingLevel:nestIsWhereScoped:] + 35 4 CoreData 0x0000000110413f88 -[NSSQLAdapter _statementForFetchRequest:ignoreInheritance:countOnly:nestingLevel:] + 344 5 CoreData 0x0000000110321adc -[NSSQLAdapter _newSelectStatementWithFetchRequest:ignoreInheritance:] + 316 6 CoreData 0x0000000110321756 -[NSSQLCore newRowsForFetchPlan:] + 118 7 CoreData 0x000000011032100c -[NSSQLCore objectsForFetchRequest:inContext:] + 524 8 CoreData 0x00000001103209a9 -[NSSQLCore executeRequest:withContext:error:] + 377 9 CoreData 0x000000011040567f __65-[NSPersistentStoreCoordinator executeRequest:withContext:error:]_block_invoke + 3311 10 CoreData 0x000000011040ecad gutsOfBlockToNSPersistentStoreCoordinatorPerform + 189 11 libdispatch.dylib 0x00000001157d549b _dispatch_client_callout + 8 12 libdispatch.dylib 0x00000001157b9fb5 _dispatch_barrier_sync_f_invoke + 393 13 CoreData 0x00000001103ffda5 _perform + 197 14 CoreData 0x0000000110320614 -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 500 15 CoreData 0x000000011031edd3 -[NSManagedObjectContext executeFetchRequest:error:] + 579 16 My People 0x000000010fe26b45 _TZFC9My_People14CoreDataHelper10getObjectsuRdq_CSo15NSManagedObject_fMS0_FzTGSqCSo11NSPredicate_7sortKeyGSqSS_13sortAscendingGSqSb__GSqGSaq___ + 1413 17 My People 0x000000010fe247f0 _TZFC9My_People14MPContactEntryg10allEntriesGSqGSaS0___ + 160 18 My People 0x000000010fe2fb9c _TFC9My_People14MPMasterListVC11viewDidLoadfS0_FT_T_ + 92 19 My People 0x000000010fe2fc82 _TToFC9My_People14MPMasterListVC11viewDidLoadfS0_FT_T_ + 34 20 UIKit 0x0000000111185590 -[UIViewController loadViewIfRequired] + 1344 21 UIKit 0x00000001111c9246 -[UINavigationController _layoutViewController:] + 54 22 UIKit 0x00000001111c9b1a -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 462 23 UIKit 0x00000001111c9c8c -[UINavigationController _startTransition:fromViewController:toViewController:] + 126 24 UIKit 0x00000001111caee5 -[UINavigationController _startDeferredTransitionIfNeeded:] + 890 25 UIKit 0x00000001111cbe42 -[UINavigationController __viewWillLayoutSubviews] + 57 26 UIKit 0x00000001113714e5 -[UILayoutContainerView layoutSubviews] + 248 27 UIKit 0x00000001110a79f8 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 710 28 QuartzCore 0x000000011529858a -[CALayer layoutSublayers] + 146 29 QuartzCore 0x000000011528ce60 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366 30 QuartzCore 0x000000011528ccde _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24 31 QuartzCore 0x0000000115281465 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 277 32 QuartzCore 0x00000001152aebfa _ZN2CA11Transaction6commitEv + 486 33 UIKit 0x000000011101deda _afterCACommitHandler + 174 34 CoreFoundation 0x0000000110700947 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23 35 CoreFoundation 0x00000001107008b7 __CFRunLoopDoObservers + 391 36 CoreFoundation 0x00000001106f650b __CFRunLoopRun + 1147 37 CoreFoundation 0x00000001106f5e08 CFRunLoopRunSpecific + 488 38 GraphicsServices 0x0000000115063ad2 GSEventRunModal + 161 39 UIKit 0x0000000110ff3031 UIApplicationMain + 171 40 My People 0x000000010fe33dbd main + 109 41 libdyld.dylib 0x000000011580a92d start + 1 42 ??? 0x0000000000000001 0x0 + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSExceptionShouldn't try? just assign nil to fetchedResults?