XCode升级后的错误，ios8.1, spritekit和swift，对象构造“NSData(contentsOfFile:options: Error:)”

I have a working game and I ran, compiled and uploaded it to ITunes connect. But after updating XCode and trying to compile my game with target ios 8.1 (not 8.0). I got this error. I have a working game and I ran, compiled and u