我开始我的项目在 ios7 上立即崩溃,出现以下错误,但我不明白如何解决。
2014-12-08 18:29:07.605 MyProject[1293:613] +[SKLabelNode nodeWithFileNamed:]: unrecognized selector sent to class 0x10c6273a0
2014-12-08 18:29:07.608 MyProject[1293:613] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[SKLabelNode nodeWithFileNamed:]: unrecognized selector sent to class 0x10c6273a0'