After I change the frame size of any view, the ixcode simply falls and gives this error. Moreover, other projects on ikskode work normally. Nowhere could a similar error be found. help me please
Process: Xcode [1552] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 8.2.1 (11766.1) Build Info: IDEFrameworks-11766001000000000~5 App Item ID: 497799835 App External ID: 820169454 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Xcode [1552] User ID: 502 Date/Time: 2017-02-21 11:42:11.347 +0600 OS Version: Mac OS X 10.12.1 (16B2555) Report Version: 12 Anonymous UUID: 1A6E852B-4D7B-D820-9C5D-11C3D447EEB7 Time Awake Since Boot: 2700 seconds System Integrity Protection: enabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Application Specific Information: ProductBuildVersion: 8C1002 ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/IDEInterfaceBuilder/IDEInterfaceBuilder-11762/InterfaceBuilderKit/RemoteViews/IBIncrementalSceneUpdateTracker.m:36 Details: Assertion failed: [self isTrackingSceneForObject:object] Object: <IBIncrementalSceneUpdateTracker: 0x7f862ec0ef00> Method: -noteObject:changedValueForKeyPath: Thread: <NSThread: 0x7f8626e12d10>{number = 1, name = main} Hints: None Backtrace: 0 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in IDEKit) 1 _DVTAssertionHandler (in DVTFoundation) 2 _DVTAssertionFailureHandler (in DVTFoundation) 3 _DVTAssertionFailureHandler (in DVTFoundation) 4 -[IBIncrementalSceneUpdateTracker noteObject:changedValueForKeyPath:] (in IDEInterfaceBuilderKit) 5 -[IBSceneUpdateManager noteObject:changedValueForKeyPath:] (in IDEInterfaceBuilderKit) 6 -[IBDocument noteChange:] (in IDEInterfaceBuilderKit) 7 -[IBStoryboardDocument noteChange:] (in IDEInterfaceBuilderKit) 8 -[IBDocument undoableProperty:ofMember:changedFromValue:toValue:] (in IDEInterfaceBuilderKit) 9 -[IBDocument observeValueForKeyPath:ofObject:change:context:] (in IDEInterfaceBuilderKit) 10 NSKeyValueNotifyObserver (in Foundation) 11 NSKeyValueDidChange (in Foundation) 12 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKeys:count:maybeOldValuesDict:usingBlock:] (in Foundation) 13 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKey:key:key:usingBlock:] (in Foundation) 14 _NSSetSizeValueAndNotify (in Foundation) 15 -[NSView setFrame:] (in AppKit) 16 -[NSView _actuallyUpdateFrameFromLayoutEngineForSize:origin:] (in AppKit) 17 -[NSView _updateFrameFromLayoutEngine] (in AppKit) 18 -[NSView _callUpdateFrameFromLayoutEngineOnSubviews] (in AppKit) 19 NSViewLevelLayout (in AppKit) 20 -[NSView layout] (in AppKit) 21 _NSViewLayout (in AppKit) 22 -[NSView _doLayout] (in AppKit) 23 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 24 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 25 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 26 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 27 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 28 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 29 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 30 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 31 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 32 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 33 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 34 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 35 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 36 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 37 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 38 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 39 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 40 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 41 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 42 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 43 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 44 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 45 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 46 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 47 -[NSView _layoutSubtreeWithOldSize:] (in AppKit) 48 -[NSView _layoutSubtreeIfNeededAndAllowTemporaryEngine:] (in AppKit) 49 -[NSWindow(NSConstraintBasedLayout) _layoutViewTree] (in AppKit) 50 -[NSWindow(NSConstraintBasedLayout) layoutIfNeeded] (in AppKit) 51 ___NSWindowGetDisplayCycleObserver_block_invoke.6213 (in AppKit) 52 __37+[NSDisplayCycle currentDisplayCycle]_block_invoke (in AppKit) 53 CA::Transaction::run_commit_handlers(CATransactionPhase) (in QuartzCore) 54 CA::Context::commit_transaction(CA::Transaction*) (in QuartzCore) 55 CA::Transaction::commit() (in QuartzCore) 56 __37+[NSDisplayCycle currentDisplayCycle]_block_invoke.31 (in AppKit) 57 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ (in CoreFoundation) 58 __CFRunLoopDoObservers (in CoreFoundation) 59 __CFRunLoopRun (in CoreFoundation) 60 CFRunLoopRunSpecific (in CoreFoundation) 61 RunCurrentEventLoopInMode (in HIToolbox) 62 ReceiveNextEventCommon (in HIToolbox) 63 _BlockUntilNextEventMatchingListInModeWithFilter (in HIToolbox) 64 _DPSNextEvent (in AppKit) 65 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (in AppKit) 66 -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in DVTKit) 67 -[IBModalEventTracker trackMouseInWindow:fromEvent:] (in IDEInterfaceBuilderKit) 68 __32-[IBViewTracker trackWithEvent:]_block_invoke (in IDEInterfaceBuilderKit) 69 -[IBDocumentAutolayoutManager delayAutolayoutStatusUpdatingDuring:] (in IDEInterfaceBuilderKit) 70 -[IBDocument delayAutolayoutStatusUpdatingDuring:] (in IDEInterfaceBuilderKit) 71 -[IBSceneUpdateManager assertOnSynchronousUpdatesDuring:] (in IDEInterfaceBuilderKit) 72 __137-[IBDocument performIncrementalUpdatesAndDelayAutolayoutStatusForSceneContainingObject:allowIncrementalSceneUpdatesForSceneRoots:during:]_block_invoke (in IDEInterfaceBuilderKit) 73 -[IBSceneUpdateManager establishIncrementalUpdateSessionForObject:duringBlock:] (in IDEInterfaceBuilderKit) 74 -[IBDocument performIncrementalUpdatesAndDelayAutolayoutStatusForSceneContainingObject:allowIncrementalSceneUpdatesForSceneRoots:during:] (in IDEInterfaceBuilderKit) 75 -[IBViewTracker trackWithEvent:] (in IDEInterfaceBuilderKit) 76 __47-[IBViewEditor resizeChild:fromKnob:withEvent:]_block_invoke (in IDEInterfaceBuilderKit) 77 -[IBViewEditor withConstraintDrawingHidden:] (in IDEInterfaceBuilderKit) 78 -[IBViewEditor resizeChild:fromKnob:withEvent:] (in IDEInterfaceBuilderKit) 79 -[IBViewEditor interceptResizingEvent:] (in IDEInterfaceBuilderKit) 80 -[IBViewEditor interceptDecoratorActionEvent:] (in IDEInterfaceBuilderKit) 81 -[IBEditorCanvasFrameController actionAreaInterceptedEvent:] (in IDEInterfaceBuilderKit) 82 -[IBEditorCanvasFrameController sendEvent:] (in IDEInterfaceBuilderKit) 83 -[IBViewEditorCanvasFrameController sendEvent:] (in IDEInterfaceBuilderKit) 84 -[IBEditorCanvasFrame mouseDown:] (in IDEInterfaceBuilderKit) 85 -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] (in AppKit) 86 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] (in AppKit) 87 -[NSWindow(NSEventRouting) sendEvent:] (in AppKit) 88 -[IDEWorkspaceWindow sendEvent:] (in IDEKit) 89 -[NSApplication(NSEvent) sendEvent:] (in AppKit) 90 -[IDEApplication sendEvent:] (in IDEKit) 91 -[NSApplication run] (in AppKit) 92 NSApplicationMain (in AppKit) 93 start (in libdyld.dylib) abort() called Application Specific Signatures: [self isTrackingSceneForObject:object] 