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我正在使用xcode 6.0.1，并且当我添加一个类型为SpriteKit Particle的新文件和时，按下SKNode Inspector来编辑属性，断言是产生的。在Xcode 6.0中添加粒子SpriteKit粒子文件时声明失败
的错误是：当我推在Xcode IDE SKnode督察按钮
ASSERTION FAILURE in /SourceCache/IDEFrameworks/IDEFrameworks-6528/IDEKit/Inspectors/IDEInspectorCategoryController.m:159
Details: **All objects must have type identifiers**, <SKScene> name:'(null)' frame:{{0, 0}, {760, 659}}, represented by <SKDocumentNavigableItem 0x7f8d3d71e0d0: (supports Any SKScene, represents: <SKScene> name:'(null)' frame:{{0, 0}, {760, 659}})> does not.
Function: NSSet *IDETypeIdentifiersForNavigables(NSArray *__strong)
Thread: <NSThread: 0x7f8d39e19c20>{number = 1, name = main}
Hints: None
此错误启动。