Xcode 7 crashes when opening Swift iBook playground in El Capitan

Question

moo OP

Created Jun ’15

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Participants 1

Hello,

When I attempt to open the Guided Tour playground file mentioned in the pre-release Swift programming book in Xcode 7 on El Capitan (first build), Xcode crashes immediately upon opening. I've been able to use it fine with other projects/playgrounds etc, its just this indiviudal one.

I've included a snippet of the crash log - does anyone know of a fix for this?

Thanks in advance.

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: 7A120f
ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/IDELanguageSupport/IDELanguageSupport-8102.19/IDELanguageSupportUI/Playground/Editor/IDEPlaygroundSourceTextScrollView.m:322
Details:  result should be an instance inheriting from IDEPlaygroundTextView, but it is nil
Object:   <IDEPlaygroundSourceTextScrollView: 0x7f8ffd8cebc0>
Method:   -_drawGutterAndResultSidebarBackgroundsIfNecessary:
Thread:   <NSThread: 0x7f8ff9e1b290>{number = 1, name = main}
Hints:   None
Backtrace:
  0  0x000000010e86e0a3 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in IDEKit)
  1  0x000000010d4bdb2d _DVTAssertionHandler (in DVTFoundation)
  2  0x000000010d4bdd44 _DVTAssertionFailureHandler (in DVTFoundation)
  3  0x00000001235f7dae -[IDEPlaygroundSourceTextScrollView _drawGutterAndResultSidebarBackgroundsIfNecessary:] (in IDELanguageSupportUI)
  4  0x00000001235f752b -[IDEPlaygroundSourceTextScrollView drawRect:] (in IDELanguageSupportUI)
  5  0x00007fff9936b20a -[NSView(NSInternal) _recursive:displayRectIgnoringOpacity:inGraphicsContext:CGContext:topView:shouldChangeFontReferenceColor:] (in AppKit)
  6  0x00007fff9936ac22 __46-[NSView(NSLayerKitGlue) drawLayer:inContext:]_block_invoke (in AppKit)
  7  0x00007fff9936a8b1 -[NSView(NSLayerKitGlue) _drawViewBackingLayer:inContext:drawingHandler:] (in AppKit)
  8  0x00007fff99369f35 -[NSView(NSLayerKitGlue) drawLayer:inContext:] (in AppKit)
  9  0x00007fff94354641 CABackingStoreUpdate_ (in QuartzCore)
10  0x00007fff94353895 ___ZN2CA5Layer8display_Ev_block_invoke (in QuartzCore)
11  0x00007fff943474fd CA::Layer::display_() (in QuartzCore)
12  0x00007fff992d9089 _NSBackingLayerDisplay (in AppKit)
13  0x00007fff992d6701 -[_NSViewBackingLayer display] (in AppKit)
14  0x00007fff943458e3 CA::Layer::display_if_needed(CA::Transaction*) (in QuartzCore)
15  0x00007fff94344f6b CA::Layer::layout_and_display_if_needed(CA::Transaction*) (in QuartzCore)
16  0x00007fff943444e9 CA::Context::commit_transaction(CA::Transaction*) (in QuartzCore)
17  0x00007fff9434421c CA::Transaction::commit() (in QuartzCore)
18  0x00007fff943530df CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) (in QuartzCore)
19  0x00007fff9564a917 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ (in CoreFoundation)
20  0x00007fff9564a887 __CFRunLoopDoObservers (in CoreFoundation)
21  0x00007fff9563cbe8 CFRunLoopRunSpecific (in CoreFoundation)
22  0x00007fff8fd92b4d RunCurrentEventLoopInMode (in HIToolbox)
23  0x00007fff8fd928df ReceiveNextEventCommon (in HIToolbox)
24  0x00007fff8fd92717 _BlockUntilNextEventMatchingListInModeWithFilter (in HIToolbox)
25  0x00007fff99304972 _DPSNextEvent (in AppKit)
26  0x00007fff996e6234 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (in AppKit)
27  0x000000010da7420f -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in DVTKit)
28  0x00007fff992fa297 -[NSApplication run] (in AppKit)
29  0x00007fff9927a100 NSApplicationMain (in AppKit)
30  0x00007fff959aa5ad start (in libdyld.dylib)
abort() called

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